188 
M. F. GUYER AND E. A. SMITH 
Experiments 12 and 18 
In these two experiments four rabbits were used as specified in 
table 7. From 4 to 6 ce. of fresh normal fowl serum was used for 
each injection. 
Rabbit no. 15 received three treatments; nos. 
20 and 24 five treatments, and no. 19, eight treatments. Num- 
DATE OF IN- 
JECTION—1918 | NUMBERS | PREGNANT 
March 9 
March 12 
March 14 
March 16 
March 19 
May 4 
May 7 
May 11 
IDENTIFI- 
CATION 
OF RABBITS 
TABLE 7 
Experiments 12 and 13 . 
Control: Treatment of rabbits with normal serum 
DAYS 
DOSE OF 
SERUM 
REMARKS 
Mating, 249 X2¢ 
Mating, 199 X2¢ 
Mating, 209 X¥2¢ 
No. 20 bore 3 young April 8; eyes 
normal 
Mating, 159 X2¢ 
Nos. 24, 19 and 15 bore no young; 24 
evidently had young killed in utero 
