53 
G. P. No. 27. Same injection as g. p. 29. No symptoms. 
[Previous treatment: 4 days prior, as g. p. 29.] 
G. P. No. 28. Same injection as g. p. 29. Symptoms; recovered. 
[Previous treatment: 17 days prior, as g. p. 29.] 
G. P. No. 26. Same injection as g. p. 29. Symptoms; recovered. 
[Previous treatment: 18 days prior, as g. p. 29.] 
G. P. No. 25. Same injection as g. p. 29. Symptoms; recovered. 
[Previous treatment: 24 days prior, as g. p. 29.] 
G. P. No. 23. Same injection as g. p. 29. Symptoms; recovered. 
[Previous treatment: 32 days prior, as g. p. 29.] 
G. P. No. 24. Six c. c. antitoxic horse serum (Natl. IX. 19) injected into the peritoneal 
cavity. Dead in 45 minutes. 
[Previous treatment: 47 days prior, as g. p. 29.] 
G. P. No. 22. Six c. c. antitoxic horse serum (Natl. IX. 17) injected into the peritoneal 
cavity. Symptoms; recovered. 
[Previous treatment: 47 days prior, as g. p. 29.] 
G. P. No. 21. Six c. c. antitoxic horse serum (Natl. VIII. 18) injected into the peritoneal 
cavity. Dead in 44 minutes. 
[Previous treatment: 67 days prior, as g. p. 29.] 
G. P. No. 20. Four c. c. normal horse serum (roan) injected into the peritoneal cavity. 
Symptoms; recovered. 
[Previous treatment : 83 days prior, as g. p. 29.] 
The following guinea pigs received 4 c. c. of antitoxic horse serum 
containing 1,000 units: 
• 
G. P. No. 38. Six c. c. antitoxic horse serum (Natl. VIII. 17) injected into the peritoneal 
cavity. No symptoms. 
[Previous treatment: 1 day prior, inoculated subcutaneously with 1,000 units, viz, 
4 c. c., antitoxic horse serum (Natl. IX. 18).] 
G. P. No. 35. Same injection as g. p. 38. No symptoms. 
[Previous treatment: 4 days prior, as g. p. 38.] 
G. P. No. 36. Same injection as g. p. 38. Symptoms; recovered. 
[Previous treatment: 17 days prior, as g. p. 38.] 
G. P. No. 32. Same injection as g. p. 38. Symptoms; recovered. 
[Previous treatment: 18 days prior, as g. p. 38.] 
G. P. No. 34. Same injection as g. p. 38. Symptoms; recovered. 
[Previous treatment: 24 days prior, as g. p. 38.] 
G. P. No. 37. Same injection as g. p. 38. No symptoms. 
[Previous treatment: 32 days prior, as g. p. 38.] 
G. P. No. 39. Six c. c. antitoxic horse serum (Natl. IX. 17) injected into the peritoneal 
cavity. No symptoms. 
[Previous treatment: 47 days prior, as g. p. 38.] 
G. P. No. 31. Six c. c. antitoxic horse serum (Natl. IX. 19) injected into the peritoneal 
cavity. Symptoms; recovered. 
[Previous treatment: 47 days prior, as g. p. 38.] 
G. P. No. 33. Six c. c. antitoxic horse serum (Natl. VIII. 18) injected into the peritoneal 
cavity. Dead in 46 minutes. 
[Previous treatment: 68 days prior, as g. p. 38.] 
G. P. No. 30. Four c. c. normal horse serum (roan) injected into the peritoneal cavity. 
Symptoms; recovered. 
[Previous treatment: 83 days prior, as g. p. 38.] 
