190 M. F. GUYER AND E. A. SMITH 
or resorbed her young. No. 13 had her hind legs paralyzed for 
some weeks, but ultimately recovered. 
Experiment 16 
A single doe was used in this experiment (table 9). From the 
ninth to the twentieth days of pregnancy, inclusive, she was 
given six injections of fresh normal fowl serum. Two of the 
doses consisted of 5 cc. each; four of them of 6 ec. each. On 
August 22nd she bore five young, all with normal eyes. 
TABLE 9 
Experiment 16 
Control: Treatment of rabbits with normal serum 
eae GIS Usounen OF if eee DOSE OF SERUM REMARKS 
cc. 
July 31 22 9 6 Mating, 229 X2¢ 
August 2 22 11 5 
August 4 22 13 5 
August 7 22 16 6 August 22, 5 young born; 
August 8 22 17 6 eyes normal 
August 11 22 20 6 
Experiment 17 
Two rabbits were used and each dose of fresh normal fowl 
serum measured 5 cc. No young were secured (table 10). 
Experiment 18 
Three rabbits were used (table 11). Inasmuch as all three be- 
came ill after the first injection of 6 cc. of fresh normal serum, the 
second and third doses were reduced to 5 cc. diluted with 3 ce. 
of normal saline solution. The remaining doses were each 6 cc. 
of undiluted serum. Nos. 24 and 15 proved infertile. No. 20 
bore four young October 12th, all with normal eyes. 
