116 C. C. WARDEN, J. T. CONNELL AND L. E. HOLLY 



TABLE &— Continued 



Artificial colloid no. J^: 35 cc. of standard broth to which was added in divided 



doses 5 cc. of a salt solution emulsion containing 10 mgm. of fat-free casein 



and 4.8 mgm. of K salt antigen. 

 Artificial colloid no. 5: The same, with 10 mgm. of hemoglobin substituted for the 



casein. 

 Artificial colloid no. 6: The same, with 10 mgm. of gelatin substituted for the 



hemoglobin. 

 Artificial colloid no. 7: The same, using 100 mgm. of fresh egg white as protein. 



Guinea-pigs injected with colloid no. 2 



No symptoms 

 No symptoms 

 No symptoms 



* Plus 250 units antitoxin, 

 t Plus 500 units antitoxin. 



