Scientific Proceedings. 



103 



70 (213) 



On the influence of C0 2 on the viscosity of the blood. 



By RUSSELL BURTON-OPITZ. 



\From the Physiological Laboratory of Columbia University, at the 

 College of Physicians and Surgeons. ] 



It has been proved by the author 1 that the blood in the veins 

 possesses a somewhat greater viscosity than the blood in the ar- 

 teries. As this difference is caused no doubt by the greater amount 

 of C0 2 present in the venous blood, it became of some consequence 

 to determine whether the arterial blood could be made to assume 

 a greater viscosity by increasing its C0 2 content. 



The dogs used in these experiments received alternately a 

 supply of normal air and air charged with C0 2 . During the period 

 of inhalation of the air plus C0 2 the arterial blood showed a some- 

 what greater viscosity than during the time when the animal 

 breathed normal air. The changes appeared very promptly, but 

 were never very conspicuous. The specific gravity of the blood 

 pursued a course parallel to that of the viscosity. 



71 (214) 



Agglutinins and precipitins in anti-gonococcic serum. 

 By JOHN C. TORREY. 



[From the Department of Experimental Pathology, Loomis Labor- 

 atory, Cornell University Medical College !\ 



In December, 1906, I described the action and method of 

 production of an anti-gonococcic serum which gave evidence of be- 

 ing of therapeutic value in the treatment of gonorrheal arthritis. At 

 the time announcement was made of the fact that the serum con- 

 tained specific agglutinins and precipitins for gonococcus. Since 

 then a detailed investigation into the nature of these anti-bodies has 

 been carried on. The results of this study may be summarized 

 as follows : 



1 . Rabbits and other laboratory animals, when inoculated with 

 cultures of gonococcus, raise specific agglutinins and precipitins. 



1 This journal : 1903, i, p. 23. 



