Scientific Proceedings. 



23 



twenty-four to forty-eight hours afterward ; (2) increased elimina- 

 tion of nitrogen and sulfur, and decreased excretion of phos- 

 phorus, in the urine. The amount and consistency of the feces 

 were unaffected. 



Repeated hemorrhages from the same animal resulted in (a) 

 cumulative quantitative metabolic effects in harmony with those 

 indicated above, and were followed by (b) steady decline in body 

 weight, and (c) gradual increase in average daily volume of urine, 

 even when the animal ate the same amount and kind of food as 

 at the beginning. 



After successive hemorrhages at intervals of a few days the 

 content of nitrogen, sulfur, and phosphorus in the blood, as well 

 as specific gravity and number of red corpuscles, gradually dimin- 

 ished, whereas the leukocytes steadily increased in number. 



These data confirm the general metabolic results obtained in 

 the earlier experiments by Bauer and others, and disagree with 

 the opposite conclusions, as to effects on proteid catabolism, 

 announced two years ago by Ascoli and Draghi. 



Fourth meeting. 1 



Physiological Laboratory of Columbia University, at the College 

 of Physicians and Surgeons. December 16, ipoj. 



21. Changes in the viscosity of the blood produced by various 

 experimental procedures," with demonstrations: RUSSELL 

 BURTON-OPITZ. 



The author described and demonstrated the apparatus used 

 in determining the viscosity of the blood. This demonstration 

 was followed by a discussion of the changes in the molecular 

 friction of the blood after intravenous injections of distilled water, 

 and of saline, dextrose, and alcoholic solutions. The effect of 

 alcohol, when introduced into the stomach and small intestine, 

 was also noted. Next were considered the changes following 

 subcutaneous administration of curare and the differences in the 

 viscosity of arterial and venous blood. K, the coefficient expressing 

 the viscosity, was determined before and after each experimental 

 procedure, two or three determinations being made in each case. 



1 Reprinted from Science, 1904, xix, p. 104; American Medicine, 1904, vii, p. 

 Ill ; Medical News, 1904, lxxxiv, p. 238. 



