76 
G. P. Xo. 4989. Ten c. c. same injection. Symptoms (?) 
[Previous treatment: 25 days prior, inoculated subcutaneously with 0.22 c. c. toxine 
Xo. 7 + 2 I 5-0 c - c - antitoxic horse serum (Alex. A202)]. 
'To control the two preceding pigs a solution of hemoglobin, 
obtained by dissolving red blood corpuscles from a normal horse 
(roan), was injected into the peritoneal cavity of a normal guinea 
pig, with negative results. 
YThether guinea pigs treated with these albuminous substances are 
rendered susceptible to subsequent injections of the same albumin is 
now being studied. 
