A new method of dentine microsampling of deciduous teeth for stable isotope ratio analysis

Carbon and nitrogen stable isotope ratio analysis of dentine is a powerful tool for examining early childhood diet in past populations. Serial sampling of the dentine can reconstruct an individual's changing diet. Previous serial studies have used homogenized samples that give broad results for age categories. This study presents a new dentine microsampling technique for use in stable isotope ratio analysis that provides stable isotope signals for three important juvenile life stages: fetal life, breastfeeding, and weaning.     

Age estimation from the pars basilaris of the fetal and juvenile occipital bone

The pars basilaris of the human occipital bone is reported to be of considerable value for age estimation in juvenile skeletal remains between early fetal periods and 6 years of age, when it fuses to the remainder of the bone. The aim of this investigation was to examine the relationship between various dimensions of the pars basilaris, and assess their reliability for accurate age estimation. The results confirm the usefulness of the bone in this respect and they are discussed in the light of differential growth of the pars basilaris, and in the increase in dimensions of the boundaries of the foramen magnum.     

Creating the Swedish Juvenile Delinquent: criminal policy,science and institutionalization c. 1930–1970

This article discusses what I call the creation of the juvenile delinquent in the period from the 1930s to the 1970s. Making use of a theoretical understanding taken from Michel Foucault and David Garland this article shows how several elements and factors contributed to this process of which I concentrate on discussing three: the criminal political context, criminological ideas and administrative changes. These practices, including the discourse production around the young offender, led to the creation of a new category: the juvenile delinquent. What happened is understood and analyzed with the help of Foucault's central concept of governmentality. Special emphasis had been laid on investigating the role in this process of reformatory prisons and the Reformatory Prisons Board. Three of the tentative conclusions that could be drawn from the discussion are that the domination of the administrative logic of order and control over the rehabilitative logic played an important role in the creation of the juvenile delinquent; that the diagnostic practice and the scientific credibility that it was built on created a widening gap between the young offenders and ‘normal’ youths; and that the creation of the juvenile delinquent contributed to a stronger symbiosis between the social, administrative and penal bodies.     

The Great Shoe Store Robbery1

This article contributes to the significant debate on the effects of the Australian criminal justice system on Aborigines and in particular Aboriginal youth. This debate fed into nation-wide concern over an ever increasing number of Aboriginal deaths in custody, recently culminating in the Federal Royal Commission into Aboriginal Deaths in Custody. Through the use of case studies and other ethnographic data drawn from investigations in the country town of Port Augusta, South Australia, the author illustrates how the agents of the legal and welfare systems in this state operate to present a view of Aboriginal juvenile crime as a normal response to these children's social environment and social conditioning. This process in turn, it is argued, reinforces and legitimates Aboriginal juvenile crime and contributes to its continuance, and the subsequent over-representation of Aboriginal youths at all stages of the juvenile justice system. Yet it is forcefully pointed out that Aboriginal children are not passive victims of the legal and welfare systems. Rather, they form their own interpretations of these systems and their ‘criminal’ activities are often attempts at defiance and capturing some form of control of their own lives in the face of a legal/welfare system seeking to impose control over them. Unfortunately, it is these very activities which return Aboriginal children to the legal and welfare systems they act against.     

'A Suitable Person for Suitable Cases': The Gendering of Juvenile Courts in England, c. 1910-39

This article examines the relationship between the introductionof women Justices of the Peace (JPs) in 1919 and the gendereddevelopment of juvenile courts in England, c. 1910–39.It argues that the campaigns for the appointment of women asJPs and for new methods of dealing with delinquent childrenwere closely connected from 1910 onwards, when the proposalwas first made that ‘suitable’ persons should beappointed to hear ‘suitable’ cases in magistratescourts. Using evidence drawn from government records and othersources, the article examines the interaction of the two campaignsand of feminist and penal reform groups in securing the remodellingof London's juvenile justice system in the Juvenile Courts (Metropolis)Act of 1920. It argues that these arrangements, and similarones adopted elsewhere in England, consciously reflected presumedfamilial and gender roles. It concludes that the replicationof the ‘traditional’ family in the composition ofthe court may have limited the ability of the youth justicesystem to be innovative in its approach to juvenile delinquencyin the period up to 1939. ^* a.f.logan{at}kent.ac.uk     

Fishing ancient Lake Baikal,Siberia: inferences from the reconstruction of harvested perch (Perca fluviatilis) size

Fishing was the foundation for many of the world's foraging peoples and was undertaken using a variety of technologies. Reconstructing fishing technologies can be difficult because these tools were often made of perishable materials. Here we explore fishing technologies employed at the Ityrkhei site on Lake Baikal, Siberia. Specifically, we employ regression analyses to reconstruct the sizes of perch (Perca fluviatilis) captured through time at the site. Our analyses demonstrate that almost no juvenile perch were taken, suggesting some selectivity in harvest. We suggest this selectivity is most consistent with the use of relatively large gauge nets or traps. Such mass harvesting technologies may have been important elements of the subsistence economies of Lake Baikal's foraging peoples throughout much of the Holocene.     

Micro‐CT Imaging and Analysis of Enamel Defects on the Early Late Pleistocene Xujiayao Juvenile

Dental pathologies and enamel defects in East Asian hominins have rarely been reported. Here, we systematically document and describe a suite of enamel defects in the Xujiayao juvenile maxilla, an East Asian hominin from the early Late Pleistocene that may represent an unknown hominin lineage. In addition, we determine the chronology of growth disruptions represented by matched linear enamel hypoplasias, evaluate the long‐held hypothesis that the large brownish pit on the I¹ is evidence of dental fluorosis and assess the utility of micro‐computed tomography (micro‐CT) techniques in analyzing enamel defects. With the use of binocular microscopy, scanning electron microscopy (SEM) and micro‐CT imaging techniques, the Xujiayao teeth were found to exhibit a high number of pit‐form defects seldom seen in the fossil record. By matching the timing of linear enamel hyperplasia across multiple teeth, a minimum of five developmental disruptions were identified, indicating that the Xujiayao juvenile experienced several growth disturbances during its short lifespan. Our SEM and micro‐CT analyses suggest that the large pit on the I¹ is an enamel hypoplasia due to its morphology and pre‐eruptive enamel thinning. It is not a post‐eruptive fluorotic pit, and there is no evidence of chalkiness or opacity associated with dental fluorosis. The micro‐CT technique made it possible to verify the presence of enamel hypoplasia and to more precisely quantify defect dimensions, especially in unerupted teeth and shallow hypoplasias that are difficult to detect by binocular microscopy or SEM. Copyright © 2015 John Wiley & Sons, Ltd.     

Mortality date estimation using fetal pronghorn remains

Pronghorn (Antilocapra americana) fetal remains are sometimes recovered from archaeological contexts. Pronghorn have consistent reproductive schedules so their remains may provide information on seasonality of site occupation and number of mortality events. To investigate the reliability of fetal remains for seasonality and mortality event assessment, bone size and tooth eruption were measured in a sample of modern fetal pronghorn remains with known mortality dates. Results indicate a strong correlation between bone size and mortality date, but no significant correlation between tooth eruption level and mortality date. Fetal bone size was used to estimate a late April or early May mortality date at both the Oyster Ridge (48UT35) and Trappers Point (48SU1006) archaeological sites. The number of mortality events at Trappers Point was also investigated. Copyright © 2007 John Wiley & Sons, Ltd.     

The Efficiency of Flotation Compared with Other Methods for Recovering Assemblages of Terrestrial and Aquatic Gastropods from Archaeological Deposits,with Reference to the Site of Pico Ramos (Basque Country,Spain)

ABSTRACT

We analysed assemblages of shells of land snails and small aquatic and wetland gastropods from a late Mesolithic-early Neolithic deposit in the cave of Pico Ramos (Basque Country). Shells were recovered by hand during excavation and all excavated deposit was processed by flotation, with a 250 μm mesh to recover floating material and a 1.0 mm mesh to recover the heavy fraction. The total assemblage comprised 5780 individuals (MNI) among 33 taxa, the sieved sub-assemblage having the highest proportions of these (2841 MNI in 31 taxa) and the hand-picked sub-assemblage the lowest (698 MNI in 11 taxa). Eleven taxa were absent from the flotation sub-assemblage, although the recovered MNI (2241; 39% of the total MNI) was high. The palaeoecological implications of the results are considered. Adult and large-sized juvenile shells of the edible land snail Cepaea nemoralis are abundant in the hand-picked sub-assemblage, but it is the absence of small-sized juvenile shells in the flotation and wet-sieved sub-assemblages that permits the inference that the species was collected for consumption. Wet sieving is therefore essential, both for interpreting hand-picked samples and in particular for the recovery of representative assemblages of land molluscs.     

Body Mass Estimates in Dogs and North American Gray Wolves Using Limb Element Dimensions

Body mass is a key biometric that is useful in interpreting many aspects of an animal's life history. For many species, including dogs and wolves, methods for estimating body mass are not well developed. This paper assesses the utility of using limb dimensions to predict body mass in dogs and North American wolves. Regression analyses are utilized here to explore the correlations between limb dimensions and body masses of modern dogs and wolves, all of known body mass at death. These analyses reveal that a number of limb end dimensions are correlated with body mass in both dogs and wolves. Regression formulae generated through the analyses appear to allow body masses to be predicted with relatively small margins of error, often less than 10%. Formulae are calculated for groups with and without juveniles. In some cases, the dimensions of the juvenile specimens plot distinctly from those of adults, indicating that regression formulae specifically for juvenile canids may be needed. The strength of the limb dimension correlations is then compared with that of regression formulae for dog and wolf cranio‐mandibular dimensions. For the dogs, the cranio‐mandibular dimensions appear to slightly out‐perform the limb element dimensions in predicting body mass. The wolf limb dimensions, however, always appear to provide better predictions of body mass than do the skull dimensions. The newly developed regression formulae are applied to several Middle Holocene dog skeletons from Siberia for which previous body mass estimates are available, the latter based on cranial dimensions. These two sets of estimates are then compared. The overall results of our study indicate the need for further research, particularly with larger sample sizes, including more juvenile specimens. We also argue that work on body size estimation in single dog breeds may be warranted in some cases. Copyright © 2016 John Wiley & Sons, Ltd.     

Weaning patterns are reflected in strontium-calcium ratios of juvenile skeletons

As human milk is exceptionally low in strontium-calcium ($\text{Sr}\text{Ca}$) ratios, but solid foods are relatively high, it should be possible to examine the pattern of dietary supplementation and the age of weaning in prehistoric groups by reference to the $\text{Sr}\text{Ca}$ ratios of juvenile skeletons. The data are presented that support this rationale, along with an investigation of the Sr/Ca values of juvenile and adult skeletons from a medieval Arab graveyard. The $\text{Sr}\text{Ca}$ data from these skeletons are shown to coincide with the age-curves expected in theory, suggesting that new palaeodemographic information is indeed obtainable from $\text{Sr}\text{Ca}$ studies. However, until further research is conducted, the technique provides a functional estimate of weaning patterns that is only suitable for comparative purposes. Additional research should clarify the relationship of functional to actual estimates of dietary supplementation and weaning.     

Becoming Men: Masculinities and the Juvenile Convict Institutions of Carters’ Barracks and Point Puer in Nineteenth‐Century Australia

Carters’ Barracks and Point Puer were the first attempts at creating a prison institution specifically for the growing number of juvenile male transportees who were being sent to the Australian colonies. Beyond the structures and regulations of the institutions, this article seeks to examine the ways in which the boys’ understanding of masculinities shaped their relationships with prison authorities and within the juvenile prison community.     

Roman Period fetal skeletons from the East Cemetery (Kellis 2) of Kellis,Egypt

Much can be learned about the religious ideology and mortuary patterns as well as the demographic and health profiles of a population from archaeological human fetal skeletons. Fetal skeletons are rare, however, largely due to poor preservation and recovery, misidentification, or non‐inclusion in general burial populations. We present an analysis of 82 fetal/perinatal skeletons recovered from Kellis 2, a Roman Period cemetery dated to the third and fourth centuries AD, located in the Dakhleh Oasis, Egypt. Most of the fetal remains were individually wrapped in linen and all were buried among the general cemetery population in a supine, east–west orientation with the head facing to the west. Gestational age estimates are calculated from diaphysis lengths using published regression and Bayesian methods. The overall similarity between the fetal age distributions calculated from the regression and Bayesian methods suggests that the correlation between diaphysis length and gestational age is typically strong enough to avoid the ‘regression’ problem of having the age structure of reference samples adversely affecting the age distribution of target samples. The inherent bias of the regression methods, however, is primarily reflected in the gestational age categories between 36 and 42 weeks corresponding with the expected increase in growth variation during the late third trimester. The results suggest that the fetal age distribution at Kellis 2 does not differ from the natural expected mortality distribution. Therefore, practices such as infanticide can be ruled out as having a significant effect on the observed mortality distribution. Moreover, the Kellis 2 sample is well represented in each gestational age category, suggesting that all premature stillbirths and neonatal deaths received similar burial rites. The age distribution of the Kellis 2 fetal remains suggests that emerging Christian concepts, such as the ‘soul’ and the ‘afterlife’, were being applied to everyone including fetuses of all gestational ages. Copyright © 2005 John Wiley & Sons, Ltd.     

Juvenile Travellers: Priscilla Wakefield's Excursions in Empire

While most discussions of juvenile imperial literature relate to the mid-nineteenth century onwards, this article draws attention to an earlier period by examining the children's books of Priscilla Wakefield. Between 1794 and 1817 Priscilla Wakefield wrote sixteen children's books that included moral tales, natural history books and a popular travel series. Her experience of the British Empire's territories was, in the main, derived from the work of others but her use of interesting characters, exciting travel scenarios, the epistolary form to enhance the narrative and fold-out maps added interest to the information she presented. Her strong personal beliefs are evident throughout her writing and an abhorrence of slavery is a recurring theme. She was also the grandmother and main caregiver of the young Edward Gibbon Wakefield and his immediate siblings. In contrast to his grandmother, Edward Gibbon Wakefield's experience of the empire was both theoretical and practical. He drew on, and departed from, the work of political economists to develop his theory of systematic colonisation and was active in both Canadian and New Zealand affairs. He began writing about colonisation in the late 1820s and his grandmother's influence can be seen in his wide use of existing sources and attractive writing style to communicate with his audience.     

A History of von Recklinghausen's NF1

ABSTRACT

The ability to maintain human brain explants in tissue culture was a critical step in the use of these cells for the study of central nervous system disorders. Ross G. Harrison (1870–1959) was the first to successfully maintain frog medullary tissue in culture in 1907, but it took another 38 years before successful culture of human brain tissue was accomplished. One of the pioneers in this achievement was Mary Jane Hogue (1883–1962). Hogue was born into a Quaker family in 1883 in West Chester, Pennsylvania, and received her undergraduate degree from Goucher College in Baltimore, Maryland. Research with the developmental biologist Theodor Boveri (1862–1915) in Würzburg, Germany, resulted in her Ph.D. (1909). Hogue transitioned from studying protozoa to the culture of human brain tissue in the 1940s and 1950s, when she was one of the first to culture cells from human fetal, infant, and adult brain explants. We review Hogue’s pioneering contributions to the study of human brain cells in culture, her putative identification of progenitor neuroblast and/or glioblast cells, and her use of the cultures to study the cytopathogenic effects of poliovirus. We also put Hogue’s work in perspective by discussing how other women pioneers in tissue culture influenced Hogue and her research.     

Nutritional and disease stress of juveniles from the Dakhleh Oasis,Egypt

Bioarchaeologists use skeletal health indicators to measure how ancient populations adapted to their physical, cultural and biological environments. Skeletons of infants and children are rarely included in these kinds of analyses because of factors such as poor preservation, small sample size, incomplete recovery or research design. In this study, skeletal remains of juveniles aged from foetal to 15 years (N = 238) from Kellis 2, a Romano‐Byzantine cemetery in the Dakhleh Oasis, Egypt, are analysed to shed light on how infants and children were affected by Roman policies during the early years of the Christianisation of Egypt. Non‐specific indicators of physiological stress (cribra orbitalia, enamel hypoplasia and osteoperiostitis) are analysed for post‐natal individuals and interpreted in the context of the physical, cultural and biological landscapes. Results from these analyses suggest moderate levels of skeletal and dental stress with a marked improvement in general health from pre‐Roman times. This study contributes to a better understanding of juvenile paleoepidemiology and mortuary practices in Egypt during the Romano‐Byzantine period. Copyright © 2010 John Wiley & Sons, Ltd.     

Early fetal maturity assessed from patterns of ossification in the hand and foot

The assessment of fetal age at death is fraught with many complications and often the determination of the maturity of the fetus is a more realistic solution to the question of fetal viability. This study examines the pattern of appearance of primary centres of ossification in the fetal hand and foot, in an attempt to construct a maturity continuum. The results show that completion of ossification in the hand precedes that in the foot and generally occurs in a more regular pattern. The method proves useful at assessing fetal maturity between the third and tenth months of intra-uterine life. In addition, the relationship to other major centres of ossification is considered.     

Age Changes in the Clavicle: from the Early Neonatal Period to Skeletal Maturity

Of all the long bones in the human skeleton, it is the clavicle which displays the longest period of growth-related activity, rendering it particularly useful for the estimation of age at death in the earlier years. However, because of the universal paucity of documented juvenile remains, most previous studies have, by necessity, not only been based on material of estimated age at death but also restricted to a narrow age range. The aim of the present study was to chart developmental age-related change in the clavicle across its full growth range using juvenile and young adult material of documented age at death. Maximum diaphysial length was recorded for prepubertal individuals and a grading of the progressive alterations in medial epiphysial morphology was recorded for post-pubertal specimens. In this way, age changes in the clavicle were examined across its developmental maturity continuum.     

Probabilistic models of seasonal <Emphasis Type="Italic">Bison</Emphasis> exploitation based on fetal prey osteometry and reproductive phenology

Seasonality studies are a staple of Great Plains archaeology, but obtaining evidence for seasonal food procurement is challenging. This study explores seasonality through the lens of fetal bison remains. A method is developed that produces intra-annual probability distributions for the date of fetal death. These distributions are informed by osteometric data from fetal bison in archaeological contexts, fetal skeletal growth curves, and data-driven models of bison conception dates. Probabilities can be assigned to seasonality hypotheses by examining date intervals across these intra-annual distributions. This method is implemented through an R program and applied to seasonality hypotheses at three archaeological sites containing fetal bison remains: Big Goose Creek (Wyoming), Baker Cave III (Idaho), and the Upper Tucker Site (Texas). Unlike previous efforts to infer seasonality from fetal bison remains, this method provides explicit probabilities showing the level of agreement between the osteometric data and seasonality hypotheses. This probabilistic approach could be extended to seasonality studies involving other animal taxa both within and outside of North America.