NUTRITION LABORATORY. 



253 



of food. Based primarily upon tlie carbon dioxide excreted as determined 

 with the respiration ap})aratus, a study was made Avith three different dogs, 

 after feeding varying amounts of meat, and the results were compared with 

 those obtained upon a normal dog similarly fed. An abstract of the results 

 is given in the following table : 



Comparison of the 24-hour inaements in the carbon-dioxide production after feeding 

 meal to three dogs xnth deficient pancreatic secretion and to one normal dog. 



[On the basis of 7 kgms. of body-weight.) 



From these results it will be seen that there is no large energy transforma- 

 tion incidental to segmentation, peristalsis, glandular activity of the stomach , 

 liver, and intestines, and the movement of the unabsorbed food through the 

 intestinal tract. The attempt to explain the increased metabolism foUo^ving 

 the ingestion of food by the theory that the increase is the consequence of 

 such movement is therefore not justifiable. 



(7) Ueber den Stoff und Energieumsatz bei Diabetes. Francis G. Benedict and Elliott 



P. Joslin. Deutsch. Archiv f. klin. Med., Ill, p. 333. 1913. 



This paper, which was prepared for German readers, presents a summa- 

 tion of the extensive series of experiments carried out at the Nutrition 

 Laboratory during four years and reported in Publications Nos. 136 and 17() 

 of the Carnegie Institution of Washington, and abstracted in the annual 

 reports of this laboratory for 1910 and 1912. 



(8) Muscular work: A metabolic study with special reference to the efficiency of the 



human body as a machine. Francis G. Benedict and E. P. Cathcart. Publi- 

 cation No. 187, Carnegie Institution of Washington, 1913. 



This investigation, which was carried out by means of a special form of 

 respiration apparatus and the bicycle crgometer described in an earlier pub- 

 hcation (Publication No. 106 of the Carnegie Institution of Washington), 

 considers two essentially fundamental questions — first, the character of 

 the material burned in the body before, during, and after muscular 

 work, and second, the relationship between the amount of effective 

 muscular work and the total heat output, this comparison indicating the 



