532 



Scientific Proceedings (132) 



lungs yielding pure cultures of the organisms fed. One of the 

 adult pigs that suckled the young pigs also died of this type of 

 pneumonia. 



The fact that the child when taken from the mother's breast 

 quickly recovered, also points to the conclusion that the mother 

 herself was the infecting source, and that in order to control 

 such infection careful isolation of both mother and child is es- 

 sential. The mother may harbor the organism in the milk with 

 clinical symptoms that are so little noticeable as to be mistaken 

 for something else, quite insignificant in nature. The freedom 

 from mastitis in this case suggests that the organism lived a 

 commensal existence in this menstruum. 



265 (2225) 

 Water retention in the body. 



By W. R. BLOOR and R. G. FREY. 



[From the Laboratories of Biochemistry of the University of 

 California, Berkeley, Calif.] 



This study was undertaken with the purpose of getting some 

 information on the factors influencing water retention in the 

 human body particularly with regard to food substances. Ex- 

 periments were conducted on medical students of the University, 

 during the late winter which in Berkeley is well adapted to ex- 

 perimentation of this kind since there are long periods of almost 

 constant temperature (about 65° F.) and humidity (75 per cent.) 

 and the laboratories are not heated. Diet was controlled and 

 constant. No liquid was taken after 6 P. M. the night before, 

 breakfast consisting of one egg and a slice of toast with no 

 liquid was eaten at 7 :30 A. M. and no luncheon was taken. 

 Urine was voided at 8 A. M. and the first sample collected at 9 

 A. M. after which one liter of water or the experimental solu- 

 tion was taken and urine samples collected at hourly or half- 

 hourly periods for three or four hours after the diuresis had 

 apparently ceased. Determination of volume, specific gravity, 

 total nitrogen and chlorides were made and the results of sev- 



