49 
G. P. No. 4352. One c. c. antitoxic horse serum (Natl. VIII. 17) injected into the perito- 
neal cavity. Dead in 35 minutes. 
[Previous treatment: 21 days prior, inoculated subcutaneously with 0.139 c. c. toxine 
No. 5+ ? +j c. c. antitoxic horse serum (PD 08021).] 
G. P. No. 4101. One c. c. antitoxic horse serum (Natl. VIII. 17) injected into the perito- 
neal cavity. Svmptoms; recovered. 
[Previous treatment: 37 days prior, inoculated subcut aneously with 0.22 c. c. toxine 
No. 7+^+y c - c - antitoxic horse serum (Alex. 190).] 
G. P. No. 4511. One c. c. antitoxic horse serum (Natl. VIII. 17) injected into the perito- 
neal cavity. Dead in 35 minutes. 
[Previous treatment: 42 days prior, inoculated subcutaneously with 0.19 c. c. toxine 
No. 7+1 unit antitoxic horse serum (Standard B27).] 
G. P. No. 4512. One c. c. antitoxic horse serum (Natl. VIII. 17) inoculated subcutaneously. 
Dead in 81 minutes. 
[Previous treatment: 42 days prior, inoculated subcutaneously with 0.19 c. c. toxine 
No. 7+1 unit antitoxic horse serum (Standard B27).] 
G. P. No. 4623. One c. c. antitoxic horse serum (Natl. VIII. 17) inoculated subcutaneously. 
Symptoms; recovered. 
[Previous treatment: 28 days prior, inoculated subcutaneously with 0.139 c. c. toxine 
No. 5+g+o c. c. antitoxic horse serum (Alex. 192).] 
G. P. No. 4514. Two-tenths c. c. antitoxic horse serum (Natl. VIII. 17) inoculated subcu- 
taneously. Symptoms; recovered. 
[Previous treatment: 42 days prior, inoculated subcutaneously with 0.19 c. c. toxine 
No. 7+1 unit antitoxic horse serum (Standard B27).] 
G. P. No. 4520. Two-tenths c. c. antitoxic horse serum (Natl. VIII. 17) injected into the 
peritoneal cavity. Dead in 65 minutes. 
[Previous treatment: 42 days prior, inoculated subcutaneously with 0.19 c. c. toxine 
No. 7+1 unit antitoxic horse serum (Standard B27).] 
G. P. No. 130. One-tenth c. c. antitoxic horse serum (Natl. IX. 17) injected into the peri- 
toneal cavity. Dead in 55 minutes. 
[Previous treatment: 45 days prior, inoculated subcutaneously with 0.22 c. c. toxine 
No. 7+-g+g- c. c. antitoxic horse serum (Stearns 1351).] 
G. P. No. 151. One-tenth c. c. antitoxic horse serum (Natl. IX. 19) inoculated subcuta- 
neously. Symptoms; recovered. 
[Previous treatment: 45 days prior, inoculated subcutaneously with 0.22 c. c. toxine 
No. 7+-g+o c. c. antitoxic horse serum (Stearns).] 
G. P. No. 136. Do. Symptoms; recovered. 
G. P. No. 144. Do. No symptoms. 
G. P. No. 165. One hundredth c. c. antitoxic horse serum (Natl. IX. 17) inoculated subcu- 
taneously. No symptoms. 
3 hrs. 45 min. later, 0.1 c. e. Do. Symptoms; recovered. 
[Previous treatment: 45 days prior, inoculated subcutaneously with 0.22 c. c. toxine 
No. 7+g^o c. c. antitoxic horse serum (Stearns 1351).] 
G. P. No. 148. One-hundredth c. c. antitoxic horse serum (Natl. IX. 17) injected into the 
peritoneal cavity. No symptoms. 
3 hrs. 45 min. later, 0.1 c. c. subcutaneously. Symptoms; recovered. 
It will be seen from the above series that one-tenth of a cubic 
centimeter of horse serum into the peritoneal cavity of a suscepti- 
ble guinea pig is sufficient to cause the death of the animal, whereas 
the same quantity subcutaneously causes symptons. 
28337— No. 29—06 4 
