Part XIL 
TOXIC ACTION OF OTHER ALBUMINOUS SUBSTANCES. 
As we found that guinea pigs may be so highly sensitized to the 
toxic action of horse serum and to a certain extent the serum from 
other animals we made a few experiments to determine whether 
other albuminous substances possessed the same toxic properties 
under these conditions. For this purpose we used egg albumin, 
peptone, skimmed milk, hemoglobin and vegetable proteid. 
G. P. No. 4366. Six c. c. of a saturated solution of egg albumin were injected into the 
peritoneal cavity. No symptoms. 
[Previous treatment: 30 days prior, inoculated subcutaneously with 0.22 c. c. toxine 
No. 7+^jj c. c. horse serum (PD & Co. 08022-A)]. 
Two days later this guinea pig was tested for susceptibility by the inoculation of 6 c. c. 
antitoxic horse serum (Natl. VIII. 17) into the peritoneal cavity. Dead in 50 minutes. 
G. P. No. 4924. Six c. c. of a saturated solution of peptone injected into the peritoneal 
cavity. No symptoms. 
[Previous treatment: 40 days prior, inoculated subcutaneously with 0.139 c. c. toxine 
No. o+ 3 ^o c. c. antitoxic horse serum (Cutter 1540)]. 
Three days later this guinea pig was tested for susceptibility by the inoculation of 6 c. c. 
antitoxic horse serum (Natl. IX. 17) into the peritoneal cavity. Symptoms; recovered. 
G. P. No. 4926. Six c. c. skimmed milk injected into the peritoneal cavity. No symptoms. 
[Previous treatment: 40 days prior, inoculated subcutaneously with 0.139 c. c. toxine 
No. 5-p4^o c. c. antitoxic horse serum (Cutter 1540)]. 
Three days later tested for susceptibility by the injection of 6 c. c. antitoxic horse serum 
(Natl. IX. 17) into the peritoneal cavity. Dead in 11 minutes. 
G. P. No. 4919. Ten c. c. vegetable proteid from oats injected into the peritoneal cavity. 
No symptoms. 
[Previous treatment: 40 days prior, inoculated subcutaneously with 0.139 c. c. toxine 
No. 5+2 To c - c - antitoxic horse serum (Stearns 16 H)]. 
Three da} T s later tested for susceptibility by the injection of 6 c. c. antitoxic horse serum 
(Natl. IX. 17) into the peritoneal cavity. Dead in 25 minutes. 
G. P. No. 4925. Six c. c. hemoglobin solution in water from washed normal (roan horse) 
corpuscles injected into the peritoneal cavity. No symptoms (?) 
[Previous treatment: 40 days prior, inoculated subcutaneously with 0.139 c. c. toxine 
No. 5+Ao c. c. antitoxic horse serum (Cutter 1540)]. 
Three days later tested for susceptibility by the injection of 6 c. c. antitoxic horse serum 
(Natl. IX. 17) into the peritoneal cavity. Symptoms; recovered. 
G. P. (normal). Four and a half c. c. solution of hemoglobin (watery solution of washed 
red blood corpuscles of roan horse) injected into peritoneal cavity. No symptoms. 
( 75 ) 
