Investigating Identity and Life Histories: Isotopic Analysis and Historical Documentation of Slave Skeletons Found on the Cape Town Foreshore, South Africa

Isotopic analysis of skeletons excavated during the 1950s has confirmed that they are the remains of shipwreck victims: slaves on board the Portuguese slaving brig Pacquet Real when it sank on 18 May 1818. Twenty-five slaves drowned and the remaining 133 became Prize Negroes at the Cape. The isotopic signatures are consistent with values expected for people living in an African village eating a terrestrially based diet. Analyses of different skeletal elements, i.e., teeth, long bone, and rib, are shown to be a valuable tool in tracing change or consistency in diet during a person's life, because different skeletal elements form at different stages of life and, subsequently, remodel at different rates. A comparison of isotope ratios from different skeletal elements indicates a change in diet in all these individuals, probably coincident with their enslavement. Variation between individuals in the isotopic composition of diets eaten early in life is sufficiently large to deduce heterogeneous origins for the group.     

Describing Archaeological Iguana Laurenti, 1768 (Squamata: Iguanidae) Populations: Size and Skeletal Maturity

The goal of this study was to provide tools to estimate size and maturity of the archaeological Iguana specimens on the basis of their skeletal remains. To achieve this, a reference of 40 Iguana osteological specimens from different collections was used to derive size prediction equations relying on bone measurements. The sequence of fusions of skeletal elements was also observed and found to be strictly identical in all observed specimens. These observations enable the size and skeletal maturity of an archaeological specimen to be determined on the basis of an isolated bone. Such data could be valuable in zooarchaeological studies, as is demonstrated using the case of a pre‐Columbian archaeological site in the Lesser Antilles. Copyright © 2015 John Wiley & Sons, Ltd.     

New regression equations for stature estimation for medieval Scandinavians

Estimating stature from skeletal remains in an archaeological context requires appropriate methods that take into account possible temporal and spatial changes in body proportions. New regression equations—both least squares (LSQ) and reduced major axis (RMA) equations—were thus developed for estimating living stature from the long bone lengths of medieval inhabitants (N = 60) of Westerhus, Sweden. The living stature of these skeletal specimens was determined by using the anatomical method. Findings in this study reveal that LSQ regression equations systematically overestimate statures of short individuals and underestimate those of tall individuals, whereas the RMA equations—both combined sexes and sex‐specific equation—provide more accurate stature estimations for individuals of very different statures. The combined sexes RMA‐equations should be used for cases in which the sex is unknown because they provide more accurate stature estimations than sex‐specific equation with a wrong sex determination. These new equations are more appropriate than generally used regression equations for estimating statures of the medieval period Scandinavians. Copyright © 2009 John Wiley & Sons, Ltd.     

The Meul Index: A non‐destructive method for estimating the cortical index in skeletal samples

The study of osteoporosis in past populations provides insight into the history and evolution of this condition. The Cortical Index is a relative measure of cortical bone often used for identifying individuals with age‐related bone loss associated with osteoporosis. Current methods of measuring the Cortical Index involve radiography or cutting actual sections of long bones at the mid‐shaft. We propose a new index, the Meul Index as means for estimating the Cortical Index without the use of radiography. Based on a preliminary study of 13 individuals consisting of 9 males, 3 females and one unknown sex, ranging in age from young to older adult, the Meul Index is highly correlated with the Cortical Index (r = 0.903). The proposed Meul Index provides a non‐destructive and inexpensive means for studying age‐related bone loss in prehistoric and historic populations represented by skeletal samples. Our research builds on the recent publication of Silva, A.M., Crubezy, E. and Cunha, E. 2008. Bone weight: new reference values based on a modern Portuguese identified skeletal collection. Int. J. Osteoarchaeol. DOI: 10.1002/oa.998. Copyright © 2009 John Wiley & Sons, Ltd.     

New analytical methods for comparing bone fracture angles: A controlled study of hammerstone and hyena (Crocuta crocuta) long bone breakage

Accurate interpretation of the cause and timing of bone breakage is essential for understanding the archaeological record. However, many variables potentially influencing break morphology have yet to be systematically explored. Focusing primarily on hammerstone breakage, we introduce new analytical methods for comparing fracture angles using the absolute values of the angle from 90°. We systematically control for intrinsic variables such as taxon, skeletal element, limb portion and skeletal age. We also compare experimental assemblages of femora broken by hammerstone and spotted hyena (Crocuta crocuta). We show that fracture angles are influenced by breakage plane, skeletal element and limb portion. While the latter two have been suggested before, this is the first time the differences have been quantified. We suggest that researchers stratify their assemblages by these variables if they are using fracture angles in analyses. At the assemblage level, hyenas created more oblique fracture angles on oblique breaks than did hammerstones.     

Investigating foetal and perinatal mortality in prehistoric skeletal samples: a case study from a 3000-year-old Pacific Island cemetery site

The Teouma skeletal sample from Vanuatu represents one of the few truly colonising populations in the Pacific Islands. Therefore, investigating the factors that may have affected foetal/infant mortality in this population is potentially important for understanding the success of settlement in this region of the world. We investigate whether stable isotope analyses of carbon and nitrogen in conjunction with skeletal ageing techniques, can aid in identifying whether the subadults from Teouma died before or after birth in an attempt to understand the potential threats to foetal and infant survival. Multiple skeletal ageing methods using diaphyseal lengths were used to age the young subadults (n = 7). Using regression-based skeletal ageing methods, four of the individuals were aged at around full-term gestation (37–42 weeks gestation), while the remaining three individuals died preterm. The isotope analyses did not assist in identifying the individuals that survived post-birth because none of the subadults displayed the 2–3‰ trophic increase in δ¹⁵N values expected for a breastfed infant, probably as a result of their young age. However, all of the foetal/perinatal individuals exhibited higher δ¹⁵N values in their bone collagen compared with the adult females of the sample, with two of the individuals demonstrating unusually high δ¹⁵N values. The δ¹³C values of the foetuses/perinates did not exhibit the same variation. We explore a number of possible explanations for this elevation of perinatal/foetal δ¹⁵N values and tentatively suggest that this is a result of in utero stress as a consequence of chronic maternal ill-health. The osteological and palaeodemographic evidence supports the assertion that females, foetuses and perinates were susceptible to environmental stress within this colonising population, resulting in early death of the perinatal individuals in addition to early terminations of pregnancy or premature birth possibly caused by infectious and/or metabolic diseases.     

The parable of the footbridge: Creativity and change in the between

In this article, the author suggests that anthropologists use the creative power of ‘the between’, an imaginative space of invention, as one way to heal the wounds of contemporary social life. His model for such practice is the sohanci, the sorcerer among the Songhay people of Niger in West Africa. The sohanci is a liminal figure who is always between the village and the bush, between health and illness, between life and death, a vantage that makes him or her a spiritual guardian, a person who dares to use the power of the between to transform social turbulence into social harmony. Like the sohanci, anthropologists have long experience of being between things, and as such, the author argues, they can use the insights derived from their experiences between things to chart paths that lead us to innovation, invention and a future of greater social harmony and social justice. What could be more important for the future of anthropology? What could be more important for the future of us all?     

Stature estimation in a central Patagonian prehispanic population: development of new models considering specific body proportions

Stature estimation of individuals from extinct human populations is a classic topic in anthropology. The estimations, using regression formulae generated from different reference samples, display different results. This fact is related to inter‐populational differences in body proportions, which is a phenotypic trait mainly correlated with climatic parameters. The aim of this paper is to address the problem of stature estimation of an archaeological skeletal sample from Patagonia – a region for which there are no specific models available – using different methods and considering differences in body proportions between reference and target populations. The sample used in this analysis is composed of 35 Late Holocene adults of both sexes recovered in central Patagonia (Argentina). The stature of each individual was first reconstructed using the anatomical method [Fully G. 1956 . Une nouvelle me´thode de de´termination de la taille. Annales Medicine Legale 35 : 266–273], which has no assumptions on body proportions. The results were compared with estimations based on 32 different regression formulae [Trotter M, Gleser G. 1958. A re‐evaluation of estimation of stature based on measurements taken during life and the long bones after death. American Journal of Physical Anthropology 16 : 79–124. 10.1002/ajpa.1330160106] and three femur/stature ratios [Feldesman MR, Fountain RL. 1996. Race specificity and the femur/stature ratio. American Journal of Physical Anthropology 100 : 207–224. 10.1002/(SICI)1096‐8644(199606)]. The average reconstructed stature was 160.8 cm for females (95% confidence band = 155.6–166.2 cm), and 170.5 cm for males (95% confidence band = 168.8–172.2 cm). Most of the comparisons of the regression formulae and femur/stature ratios showed significant differences, which are explained by differences in body proportions between the Patagonian sample and the ones chosen as reference. Finally, a set of new equations was developed using simple regression techniques. It is suggested that whenever possible, population‐specific formulae should be used in archaeological studies. In any other situation, the choice of a reference population should be made by taking into account its geographic (latitudinal) provenance. Copyright © 2009 John Wiley & Sons, Ltd.     

A guide for the distinction of species, sex and body side in bones of sheep and goat

Morphological criteria are described that were found to be the most successful for distinguishing between skeletal fragments of adult sheep (Ovis) and goats (Capra) in the Western European, early medieval sites of Haithabu and Oldenburg in Holstein. It is emphasized that a sufficiently large sample should be observed. In addition, methods are given for distinguishing sex in the pelvis, and body side in distal metacarpus and metatarsus ends.     

Avulsion injuries of vertebral endplates

Bone changes resulting from avulsions involving vertebral endplates have had little, if any, systematic attention in palaeopathological literature. To gain insight into their occurrence and into their variety, two archaeological skeletal collections covering the period AD 1455–1824 were examined. Additional skeletal material was used to illustrate typical examples. A quarter of the 44 adults who had adequate numbers of vertebrae at all spinal levels showed minor to major vertebral endplate changes as a result of avulsion injuries. The male/female ratio was 7:4. The ratio of individuals with injuries contracted during their youth and during their adulthood was 3:8 (n=11). Approximately half of the affected individuals showed such changes in multiple vertebrae. In about one third of the cases, concomitant vertebral fractures, which did not involve the endplates, were recorded. Since the existing classifications of endplate changes from avulsion injuries were developed on the basis of clinical diagnoses made by means of X‐ray or by autopsy, an adapted and extended outline for palaeopathological use is proposed. A series of differential diagnoses is discussed. Although, in general, the poor preservation of archaeological spines hampers epidemiology, the diagnosis of spinal avulsion injuries offers interesting information at the individual level. Copyright © 2000 John Wiley & Sons, Ltd.     

The estimation of body weight of the reindeer (Rangifer tarandus L.) from skeletal measurements: preliminary analyses and application to archaeological material from 17th- and 18th-century northern Finland

Abstract

In this study, a variety of postcranial skeletal measurements of reindeer (Rangifer tarandus L.) are used to predict the body mass. Regression equations for estimating the body weight of females as well as correction factors for estimating the weight of males are generated. These are applied to archaeological reindeer bones from 17th- and 18th-century Northern Finland. Predicted weights of archaeological reindeer correspond well with the weight of modern reindeer. Sexual dimorphism, however, caused problems in this analysis, since the criteria used for sex assessment affect the body weight prediction and thus the results of inter-assemblage comparisons.     

Earliest evidence of spinal tuberculosis from the Aneolithic Yayoi period in Japan

Tuberculosis has existed from early prehistoric days to modern times. The main causative agents of tuberculosis worldwide are Mycobacterium tuberculosis (M. tuberculosis) and M. bovis, along with M. africanum, M. cenettii and M. microti; these species make up the ‘M. tuberculosis complex’. This worldwide infection has been of special interest to palaeopathologists due to its characteristic bone lesions as well as its great antiquity. Historically, tuberculosis has been recognised in Japan for more than a thousand years. However, the origin and early prevalence of tuberculosis remain unknown. In the present study, we present the earliest evidence of skeletal tuberculosis found in the Aneolithic Yayoi period in Japan (ca. 300 BC to AD 300). The skeletal remains showing typical pathological changes of spinal tuberculosis were dated to between 454 BC and AD 124 by dendrochronological methods using coburied arrow-shield board and house columns made of Japanese cedar. We discuss the early prevalence of this infectious disease and its influence on the population history of the Japanese from prehistoric to Aneolithic times. Copyright © 2006 John Wiley & Sons, Ltd.     

Refining the Quadratic Crown Height Method of age estimation: do elk teeth wear quadratically with age?

Teeth are the basis for the best methods for estimating the age-at-death of archaeological and paleontological faunal remains, because they change by eruption and wear throughout an individual's life and because they preserve well. However, age-at-death can be difficult to estimate when teeth are isolated or when no known-age reference sample is available. For these reasons, researchers developed the Quadratic Crown Height Method (QCHM), a set of quadratic formulae that can be used to predict age-at-death from tooth crown height, when unworn crown height and the ages when the tooth erupts and when its crown height should reach zero can be estimated. Previous tests of the QCHM suggest that modified equations could improve the method. Here, we use crown height measurements on a sample of 226 known-age Rocky Mountain elk (Cervus elaphus) to perform such modifications. We adjust the age at which each tooth type's crown height reaches zero from the species' potential ecological longevity or average maximum life span to an age that we empirically estimate for each tooth type. We also empirically assess whether for different elk teeth the exponent in the QCHM formula is actually equal to 2; it is for M1, but for P4 it is about 1, indicating a roughly linear relationship. The exponents for M2 and M3 are intermediate, being closer to 1.5. Because different teeth wear at different rates and wear completely away at different ages, we recommend that researchers use the modified equations provided here to estimate age-at-death for samples of Cervus elaphus.     

A METHOD FOR GROUPING POTTERY BY CHEMICAL COMPOSITION

A new similarity measure is proposed, the ‘dilution factor spread’ or, derived from it, a ‘goodness of fit’ parameter. This has the advantage that raw data without any transformation can be used, diluted samples are recognized and errors of individual concentration values can easily be included. The use of this similarity coefficient in multivariate cluster analyses to construct dendrograms is shown and compared with the use of the well-known similarity measure of Euclidian distance in attribute space and of the cos θ measure.     

An assessment of the value of bone density measurements to archaeoichthyological studies

This paper reviews the meaning of the term ‘density’ and the problems associated with the methods of density determination for animal bones in archaeology. It has often been assumed that density is the intrinsic property of most influence in controlling the rate of a bone's decay. Values for whole bone density have been published only for large mammal bone, however. Fish bone appears to be particularly vulnerable to decay, and usually a restricted range of skeletal elements are recovered from archaeological sites. The object of this study was to examine the relationship between fish bone density and the ability of the bone to survive on occupation sites and in archaeological deposits. A set of ‘density’ measurements was established for the bones of cod (Gadus morhua). The usefulness of these measurements as a predictive tool in archaeoichthyological studies is assessed. It was found that ‘density’ as measured did not explain adequately the relative survival of skeletal elements after mechanical abrasion and weathering, or within archaeological deposits.     

A REVIEW OF SUPERVISED AND UNSUPERVISED PATTERN RECOGNITION IN ARCHAEOMETRY*

Principal component, cluster and discriminant analysis are multivariate statistical methods that are widely used in archaeometry. They are examples of what are known in some literatures as unsupervised and supervised learning methods. Over the past 20 years or so, a wide variety of other learning methods have been developed that take advantage of modern computing power and, in some cases, have been designed to handle data sets more complex than those often used in archaeometric data analysis. To date, these methods have had little impact on archaeometry. This paper reviews, in a largely non‐technical manner, the ideas behind these newer methods; illustrates their use on a variety of data sets; and attempts to assess their potential for future archaeometric use.     

Smoking and health in London's East End in the first half of the 19th century

Abstract

The harmful effects of smoking are now proven, but to what extent can tobacco use be identified in 19th-century skeletal remains? The full osteological analysis of 705 individuals from the cemetery of St Mary and St Michael (open 1843–54) in Whitechapel, London, revealed a high prevalence of pipe smoking amongst the male population. In addition to a lower life expectancy, the smokers were found to have increased levels of skeletal evidence for lung disease when compared to the remainder of the sample. This has implications for the health, social structure and cohesion of this Irish migrant population.     

Application of Bement's Spray Sealant Technique to Infant Skeletal Remains

Abstract

A 1985 article in JFA introduced a technique for stabilizing adult human skeletal remains. A modification of this technique was developed for the removal of two fragile infant burials from a Caddoan site in east Texas that enabled the excavators to remove and transport the pedestaled burials to a laboratory setting for more precise and detailed excavation. Details of this application are described, as is the utility of this method.     

Dental root dentine translucency used in age determination of medieval Norwegians from Trondheim

A pilot study on eight skulls from the churchyard of St Olav's church in Trondheim, excavated in 1988–1989, was carried out to compare age determined by root dentine translucency with the age assessed by a physical anthropologist. The difference in mean age between the two methods was not significant (p = 0.06). Age determinations based on root dentine translucency were then performed on removable teeth from the adults among the 248 skeletons found in the same churchyard, excavated in 1984–1985. A comparison between the ages determined using root dentine translucency and the ages previously determined by the direct inspection method was performed. A significant systematic difference was seen between the two methods (p = 0.000). The root dentine translucency method gave an age range for the cohort excavated in 1984–1985 between 30 and 72 years, whereas the direct inspection method gave a range between 15 and 63 years. Because evaluation of many criteria are required to achieve reasonably accurate estimates of age in connection with the direct inspection method, expertise in skeletal biology is necessary. The method of measuring root dentine translucency as a tool in archaeological and anthropological work and fieldwork and in forensic science seems to have advantages because the method can be used without previous extensive training.     

A comparison of the treatment of errors in radiocarbon dating calibration methods

The application of radiocarbon dating to archaeological samples generally requires calibration of ¹⁴C dates to calendar ages and interpretation of dating errors. In this paper, four recent methods of age calibration are assessed, particularly with regard to their quality of error treatment. Recent experimental research has suggested that commonly quoted errors on “raw” ¹⁴C dates may require enlargement to more realistic levels, which, when incorporated in the calibration schemes, produce a considerable increase in the size of the typical calibrated interval. A general decrease in the sensitivity of ¹⁴C dating using single, “normal precision” dates is implied. Thus typical calibrated age intervals range from 300 to 1300 years (approximate 95% confidence level), with little improvement resulting if “high precision” calibration systems are used to correct “normal precision” dates. Of the four methods considered here, that proposed by Neftel is found to provide the most objective, flexible, comprehensive and “easy to use” scheme. This method is particularly recommended for its treatment of errors both on the dates to be calibrated and on the calibration curve itself.