10. 
Il. 
E. 
T4. 
Ti 
16. 
IT. 
41 
Exhibited by Arnold Graf, Zodlogical Department, 
Columbia University. 
Preparations illustrating Karyokinetic cell division in the 
Egg of an Annelid (Nereis). 
Exhibited by E. B. Wilson, Zoological Department, 
Columbia University. 
Eggs and Larve of Amia calva (the Mud-fish or Bow-fin). 
Exhibited by Bashford Dean, Zodlogical Department. 
Columbia University. 
. Mountep Asiatic ELEPHANT ‘‘ Tip,” illustrating recent 
improvements in taxidermy. 
GREENLAND Watrus, female and young calf, collected 
by Prof. L. L. Dyche, on the Peary Relief Expedition of 
1895. 
Surin and Sku of the fish-eating Rodent, Ichthyomys 
Stolzmanni Thomas, from Peru—the second known speci- 
men. 
Specimens of the SNOWFLAKE, Plectrophenax nivalis, illus- 
trating change of color from the winter to the breeding 
dress by the shedding of the tips of the feathers. 
Specimens of the SANDERLING AND OTHER Birps, illus- 
trating the change of color by moulting in species alleged 
to acquire the breeding plumage by change of color in the 
feathers without moulting. 
Nos. 14-18, exhibited by Department of Mammalogy 
and Ornithology of American Museum of Natural History. 
BACTERIOLOGY. 
ies ; 
In CuHarGE oF F. M. CHEESMAN. 
CuLTURE oF Bacirus. No. 41. Exhibited. by Prof. H. 
W. Conn, Wesleyan University. 
Morphological preparations of Bacillus, No. 41. This 
bacillus, obtained originally from a specimen of milk 
