Archaeology of Guano: Preliminary Results of the Survey Conducted in Caleta Robles (Mejillones,Chile), 1862–83

The exploitation of guano was one of the first important economic activities in Chile and Bolivia during the 19th century. Although its development was brief and less successful than the guano industry in neighbouring Peru, it laid the foundation of a state business system based on the granting of franchises to private companies, regulation of the maritime trade and modernisation of the extractive process to improve the exploitation of mineral resources.

Caleta Robles, a guano production centre between 1862 and 1883, succeeded the exploitation of other guano deposits on the Mejillones peninsula coast from the 1840s. It represents a highly relevant coastal archaeological site illustrating the early development of the mining industry in the north of Chile.

The preliminary results of the investigations conducted on this site have created an understanding of the spatial distribution of the different functional areas relating to the different phases of the production process and their adaptation to suit the peculiar topographical conditions of the site.     

Better a Broader Diagnosis Than a Misdiagnosis: The Study of a Neoplastic Condition in a Male Individual who Died in Early 20th Century (Coimbra,Portugal)

The paleopathological record of neoplastic conditions in the past is considered scarce. The detection of tumours in ancient populations is hindered by the quality and quantity of signs visible on the skeleton, the methodological approach, the preservation of remains, and by difficulties of differential diagnosis. The aims of this paper are to report the extensive and multiple osteolytic lesions observed in an adult male and to discuss the possible etiology of these lesions. The individual, a 71‐year‐old male who died in 1932, is part of the Coimbra Identified Skeletal Collection. Records indicate that he died of a ‘heart lesion’. The present study used macroscopic, radiological, and computerized tomography examinations to analyse the skeletal remains of the individual number 439. The type and pattern of the lesions detected, which were most prominent on the skull, were compared with both clinical and paleopathological diagnostic criteria for different nosologic groups. The differential diagnosis addresses problems expressed both in clinical and in paleopathological literature with regard to the difficulties in distinguishing metastatic tumours from multiple myeloma. The nature of the lesions represented by this individual precludes an exact diagnosis. Therefore, we employed a broader category, neoplastic condition, instead of choosing a more specific diagnosis that would likely have resulted in a misdiagnosis due to overlapping features on this individual's condition. Further investigations are necessary to establish more replicable indicators and to improve confidence in retrospective diagnosis of these types of conditions. Copyright © 2011 John Wiley & Sons, Ltd.     

Book reviews

The Devil in the New World: The Impact of Diabolism in New Spain. By FERNANDO CERVANTES. New Haven: Yale University Press, 1994. Pp. x, 182.

An Evil Lost to View? An Investigation of Post‐Evangelisation Andean Religion in Mid‐Colonial Peru. By KENNETH MILLS. Liverpool: Institute of Latin American Studies, University of Liverpool, Monograph Series No. 18, 1994. Pp. 147.

The Limits of Racial Domination: Plebeian Society in Colonial Mexico City, 1660–1720. By R. DOUGLAS COPE. Madison: University of Wisconsin Press, 1994. Pp. xiii, 220.

Memory, Myth, and Time in Mexico: From the Aztecs to Independence. By ENRIQUE FLORESCANO. Trans, by Albert G. Bork and Kathryn R. Bork. Austin: University of Texas Press, 1994. Pp. ix, 282.

Fuentes manuscritas para la historia de Iberoamérica. Guía de instrumentos de investigación. Por SYLVIA L. HILTON e IGNACIO GONZALEZ CASASNOVAS. Madrid: Fundación Mapfre América‐Instituto Histórico Tavera, 1995. Pp. 617.

The Town of San Felipe and Colonial Cacao Economies. By EUGENIO PINERO. Philadelphia: Transactions of the American Philosophical Society, vol. 84, 1994. Pp. 189.

Imperial Panama: Commerce and Conflict in Isthmian America 1550–1800. By CHRISTOPHER WARD. Albuquerque: University of New Mexico Press, 1993. Pp. xii, 272.     

Trafficking in US Agriculture

Based on a qualitative methodology that includes in‐depth interviews with 90 Mexican migrant smugglers and 45 Central American farmworkers, this article analyzes the three separate elements of trafficking in US agriculture, namely acts, means, and purposes. We conclude that some US employers participate in human trafficking by financing or helping to recruit and transport Mexican and Central American migrants to the US by means of “abuse of a position of vulnerability” for the purposes of involuntary servitude, debt bondage, and sex exploitation.     

Ancient Egypt in Brazil: A Theoretical Approach to Contemporary Uses of the Past

In this paper we consider archaeology as a product of social interaction, and discuss how ancient Egyptian materiality has been an important part of identity building in Brazil. We begin by reviewing our theoretical setting, and suggest that a postmodern approach is most helpful to our goal of understanding the social context of the public uses of archaeology. The paper then turns to the trajectory of “Egyptomania” in Brazil, from the 19th century onwards, highlighting the importance of cultural movements such as Kardecism and Masonry in this trend. We argue that the use of Egyptian subjects in Brazil has connections with social inequality, racism, and gender biases. Finally, we present a case study on positive recent trends in the presentation of ancient Egypt in school textbooks which highlights critical approaches to the use of ancient Egyptian subjects in contemporary Brazil.     

Stabilization of the Tlaltecuhtli monolith pigments

A painted monolith, as important as the Aztec Calendar or the Coyolxauhqui, has been discovered in the ritual Aztec center of Mexico City. It represents Tlaltecuhtli, the bisexual manifestation of the Earth from whom all life comes. Still, pigments, which have lost their conglomerating resins, have to be retained. In this study, the consolidation of ochre pigment on original fragments from the Aztec sculpture is presented. Several compounds were tested as consolidants, on the one hand natural polysaccharides, Funori and Slobber of Nopal exudate, on the other derivatives of cellulose, Methocel^® and Klucel^®, and also commercial consolidants as KSE 300^® and Paraloid B72^®. To simulate the ageing of consolidated samples, they were treated in an Accelerated Weathering Tester. Then, both sets of samples, fresh and aged, were characterized structural, morphological and texturally by using X-ray diffraction, electronic microscopy and nitrogen adsorption, respectively. A leaching test was performed on consolidated samples to evaluate the consolidant efficiency.     

Computer vision methods and rock art: towards a digital detection of pigments

A non-invasive procedure for assessing and interpreting the pigments of rock art paintings through computer vision and photogrammetric techniques is presented. The method is designed to document and interpret poorly preserved pigments by making use of advanced techniques of photogrammetry and computational imaging. Two different software solutions that were developed by the authors have been used for this purpose. Finally, two case studies of rock art paintings from Spain have been analysed, which show the reliability of the method.