110 NEW YORK ZOOLOGICAL SOCIETY 



2. In all cases the central nervous system of the animals 

 received has been assigned to Dr. Frederick Tilney for research 

 in that department. The material has been extremely valuable 

 in furthering Dr. Tilney's highly important work on the hypo- 

 physis and on the morphology of the diencephalon. 



3. The biliary and pancreatic ducts have been investigated 

 by Dr. Brown and Dr. Sharp, the latter specializing on the finer 

 structure of the pancreas in the sauropsids. 



4. The ileo-colic junction has been studied in all cases and 

 many new and valuable preparations have been added to the 

 already existing series. 



5. The lungs, in all cases in which their condition permitted 

 it, have been used for continuing the study of the mammalian 

 bronchial system and pulmonary artery. 



6. The genito-urinary tract has been removed and the prep- 

 arations added to the already existing series. Some important 

 observations have resulted in this field. 



7. In a large majority of the animals successful injection 

 of the venous system has been obtained, and much valuable ma- 

 terial secured, especially in the district of the post-cava, for con- 

 tinuing the work on this line, which has engaged the attention 

 of the laboratory for a number of years. 



8. The work of the winter has uncovered some very impor- 

 tant facts in reference to specialized morphologic characters in 

 contrasting the Old World monkeys with those of the New World. 

 It is hoped that with further material a clearer insight may be 

 obtained into the phylogenetic relations of these two Primate 

 groups. 



9. The bodies of the animals have been, whenever practi- 

 cable, stored with a view toward the collection of material for 

 future work on the muscles and on the peripheral nervous and 

 vascular system. The preliminary injection with Lefkowski's 

 fluid has made this very generally possible, by reason of the 

 excellent preservation of the soft parts thus obtained. When 

 the condition of the animal did not warrant its retention in the 

 study collection, it has been used for the preparation of the bony 

 skeleton. 



10. While the above has been the general routine adopted, 

 individual forms have, of course, been treated individually, ac- 

 cording to the peculiarities of their structure. 



