1892 ] NEW YORK ACADEMY OP SCIENCES. 53 



We are at present making arrangements for obtaining a series 

 of Procyon embryos for this purpose. 



Again, a careful and critical comparison of the entire aliment- 

 ary system of various forms devoid of cascum taken from differ- 

 ent groups may point to some common structural features in 

 other parts of the system which will aid in affording an explana- 

 tion of the condition. This would of course include a histolog- 

 ical examination of the digestive tract. 



The minutes of November "2\st and 28lh omitted in regular order 

 are here given in full. 



November 21, 1892. 



Stated Meeting. 



The President, Dr. Hubbard, in the chair ; about seventy-five 

 persons jDresent. 



The reading of the minutes was omitted. 



Prof. Henry F. Osborn, of Columbia College, delivered the 

 second lecture of the Public Course on: 



"The Rise of the Mammalia," illustrated by specimens and 

 lantern slides. 



November 28, 1892. 



Stated Meeting. 



Mr. Tatlock in the chair ; six persons present. 



The minutes of October 31st and November 21st were read 

 and approved. 



Robert L. Jack, of Brisbane, Queensland, was nominated as 

 as Corresponding Member. 



The following paper was read : 



