232 



for sometime earlier. In Torpedo, I have not found the accessory 

 optic vesicles at this stage, but, later they are present. I shall make 

 some further comparisons after studying sections of Torpedo. 

 December 29, 1893. 



New York Academy of Sciences, Biological Section, 



December 4, 1893. 



Professor H. F. Osbokn described and exhibited a series of resto- 

 rations of Lower Miocene mammals including Titanotherium , Acero- 

 therium, Metamynodon, Protapius, Elotherium, Oreodon and other charac- 

 teristic forms. 



This is the first of a series of tertiary mammal groups in pre- 

 paration. 



Mr. 0. L. Stkong described a new modification of the rapid Golgi 

 method designed to eliminate some of its present defects, i. e., uncertainty 

 of success and irregularity in the stain when attained, due probably in 

 great measure to the feeble penetration of the silver nitrate. 



The modification consisted in adding a certain proportion of sodium 

 sulphate to the silver nitrate in which the specimens are placed after 

 the hardening in osmic bichromate. 



While this modification has hardly been tried sufficiently to ascer- 

 tain exactly its merits, it seemed certain that in some cases, at least, it 

 gave much more complete and uniformly stained pictures of the nervous 

 system than the old procedure. 



Specimens of the heart of a tadpole and cord of an embryo chick 

 were exhibited. 



Prof. E. B. "Wilson noted a mode of preparation of lobster testis 

 which gave results especially favorable for class work in cytology. 



Bashfoed Dean, rec. sec. 



Anatomische Gesellschaft. 



Die achte Versammlung der Gesellschaft wird in Strafs- 

 burg (Elsafs), und zwar wegen des Congresses nicht Ostern, 

 sondern Pfingsten d. J. (14.— 16. Mai) stattfinden. 



Jahresbeiträge zahlten die Herren Rawitz, Cori, Bugnion (zwei 

 Jahre), S. Mayer, Ellenberger (zwei Jahre), Eisler. 



An die Zahlung der Beiträge, besonders der noch vielfach 

 rückständigen für 1893 und frühere Jahre, wird erinnert. 



Der Schriftführer: K. von Bardeleben. 



Frommannsche Buchdruckerei (Hermann Fohle) in Jena. 



