508 Proceedings of the Association of American Anatomists 



been obtained, but there is some doubt as to whether the information 

 received in one year will be as permanent as when a longer time was 

 devoted to the stiidv of anatomy. 



SECTIONS OF DECALCIFIED BODY. By Robert J. Terry. 



As stated by the writer at the meeting of this association in Wash- 

 ington in 1900, where sections of the decalcified body were shown, the 

 ultimate aim of this work is to produce sections thin enough to be iise- 

 ful in reconstructing. The anatomy of the pelvis could be advan- 

 tageously studied in this way. Imbedding in paraffin was tried, but with 

 little success on account of the imperfect dehydration of the subject. 

 After decalcification, the body (that of an infant) was placed in differ- 

 ent strengths of alcohol and at the same time alcohol was injected into 

 the arteries by siphonage. Finally turpentine was used for a bath and 

 also injected. This was continued for a week. For imbedding, the 

 subject was immersed in paraffin kept at the melting point and by 

 a compressed air apparatus paraffin was forced into the vessels. The 

 paraffin imbedding was continued for a week. The results were in the 

 main ^unsatisfactory. 



A CASE OF BREECH PRESENTATION IN A MONKEY. By Robert J. 

 Terry. 



Exhibition and description of specimen. 



MODELS ILLUSTRATING THE DEVELOPMENT OF THE ARM IN MAN. 

 By Warren H. Lewis. The American Journal of Anatomy, VoL I. 



ON THE DEVELOPMENT OF CONNECTIVE TISSUE FIBRILS. By 

 ' Franklin P. Mall. The American Journal of Anatomy. VoL I. 



CERTAIN RACIAL CHARACTERISTICS OF THE BASE OF THE- SKULL. 

 By Ales Hrdlicka. 



The paper dealt with the middle lacerated foramen, the petrous por- 

 tions of the temporal bones and the styloid, with demonstration of the 

 different stages of development of these parts in primates and at differ- 

 ent stages of life in the whites, and the differences of these parts, fully 

 developed, in the negroes, Indians and whites. In the adult whites, the 

 average middle lacerated foramen is large, the petrous portions appear 

 considerably sunken (bulging of surrounding parts), the stjdoid is well 

 developed. In the Indian, on the average, the foramen is of but a mod- 

 erate size, small in the negro, in apes absent; the petrous portions are. 



