NUTRITION LABORATORY. 251 



STUDIES IN CHRONIC STARVATION. 



Using the modified form of respiration apparatus, whereby both 

 carbon dioxide and oxygen were determined, Dr. S. Morgulis made 

 a series of observations on a dog undergoing chronic starvation with 

 a period of realimentation. The dog was for a certain period of 

 time somewhat underfed, with a gradual loss in weight; subsequently 

 feeding was resumed, with a return to normal weight or even above. 

 Special care was taken throughout the whole experiment to have the 

 dog in excellent condition and thereby eliminate the influence of 

 any abnormal factor. 



INFLUENCE OF TEMPERATURE ENVIRONMENT ON METABOLISM OF ANIMALS. 



By means of the new recording device for registering the muscular 

 movements of animals, a series of experiments was begun to study 

 the influence of temperature environment upon the carbon-dioxide 

 production and oxygen consumption of dogs and other animals. In 

 earlier experiments the influence of temperature environment has 

 always been complicated by the unknown factor of muscular activity 

 incidental to movements about the cage, or shivering. By means of 

 the graphic record it has been possible to make studies in which the 

 temperature environment alone, entirely independent of muscular 

 activity, was the active factor. While the experiments thus far rep- 

 resent only a preliminary period of observation, it is proposed to 

 carry on extensive investigations with different kinds of animals, 

 particularly long-haired and short-haired dogs, studying the influence 

 of clipping the hair, etc. 



PUBLICATIONS. 



The following publications have been issued : 



(1) Die magnetische Reaktion einer zwischen den Polen eines Magnets kreisenden 



Kupferscheibe. W. G. Cady and F. G. Benedict. Phys. Zeitschr., 13, p. 

 920. 1912. 



This article discusses particularly the mathematical features of interest- 

 ing observations made upon the bicycle ergometer used in this laboratory for 

 studying the muscular work of man. It represents a special treatment of the 

 second part of Publication No. 167 of the Carnegie Institution of Washington, 



(2) The influence of the ingestion of food upon mctaboUsm. F. G. Benedict. Trans. 



Fifteenth International Congress on Hygiene and Demographj', Sept. 1912. 



The well-known increase in metabolism following the ingestion of food 

 has been explained by varicus writers in different ways. This address con- 

 sidered the subject purely from the standpoint of evidence secured in the 

 Nutrition Laborator}^ A repetition of Loewy's experiments on the inges- 

 tion]of saline purgatives showed no increase in metabolism, and the fact that 

 the feeding of meat to dogs with deficient pancreatic secretion produced 



