366 EXPERIMENT STATION RECORD. 



y<nUiiii(iif)skniHk., lo (li)09). No. 1, pp. 1-25; ahs. in CItcm. Ahs., 3 {1909), 

 No. II, p. 129 'i). — After sham feeding of meat more gastric juice is secreted and 

 the secretion continues for a longer time than in a similar case with fish con- 

 taining the same amount of nitrogen and water. The secretion of both gastric 

 juice and saliva is dimhiished after repeated feedings of the same material. 

 Fish bouillon was found to be a more active stimulant of gastric secretion than 

 an equivalent quantity of meat bouillon introduced directly into the stomach 

 through a fistula. 



Nutrition {Carnegie Inst. Washington Year Book, 6 {1907), pp. 200-205; 

 7 {1908), pp. 209-212). — Information is given concerning grants which have 

 been made to R. H. Chittenden, L. B. Mendel, and T. B. Osborne for studying 

 respectively the minimal proteid requirements of high proteid animals, the 

 physiology of growth especially in its chemical processes, and the vegetable 

 proteids. 



Nutrition laboratory, F. G. Benedict {Carnegie Inst. Washington Year Book, 



6 {1907). i)p. 130-13S). — Plans for the work of the nutrition laboratory are 

 discussed and a progress report is made of the year's research work, particu- 

 larly that with tlie respiration calorimeter. 



In the respiration calorimeter experiments concerning the specific effect 

 upon metabolism of the ingestion of food it was found that it was possible 

 " to determine with considerable accuracy the effect of the ingestion of vary- 

 ing amounts of nutrients upon body weight and temperature, pulse and 

 respiration rate, the elimination of carbon dioxid and water vapor, the con- 

 sumption of oxygen, and the heat production, and thus throw important light 

 on the question of the work of digestion." 



The experiments are still in progress and the results of those which have 

 been made have not been wholly computed; detailed discussion, the author 

 therefore considers, would be premature. It may be said, however, " that the 

 ingestion of food of any kind results in an increased metabolism as shown by 

 the measurements of the factors mentioned above. Marked differences in the 

 effect of the ingestion of protein, fat, or carbohydrate are also noted. 



" The nature of the increase in metabolic activity is not yet wholly clear. 

 Probably all the various factors, such as increased motility of the digestive 

 tract, glandular activity in secreting digestive juices, the chemical action of 

 ferments in inducing hydrolysis, etc., contribute to the total effect. Certainly 

 innumerable problems of vital interest to the physiologist as well as the 

 physician await study." 



Nutrition laboratory, F. G. Benedict ( Carnegie Inst. Washington Year Boole, 



7 {1908), pp. 158-162, pi. 1, Ogms. J/). — A description, with plans of each 

 of the four floors, is given of the nutrition laboratory which has been built 

 under the author's direction in Boston, Mass., for the nutrition investigations 

 of the institution. The building is very completely equipped in every way 

 and contains besides the calorimeter laboratory with the respiration calori- 

 meters and accessory apparatus, a special suite of rooms with facilities for 

 experiments on animals, photographic room, machine shop, etc., and quarters 

 for the editorial and computing division. 



ANIMAL PRODUCTION. 



The role of the ash constituents of wheat bran in the metabolism of 

 herbivora, E. B. Hakt, E. V. McCollum, and G. C. Humphrey {Avicr. Jour. 

 Physiol., 2Ji {1909), No. 1, pp. 86-103). — The authors report a study in con- 

 tinuation of earlier work (E. S. R., 21, p. 69), as to the action of the com- 



