26 CARNEGIE INSTITUTION OF WASHINGTON. 



The anticipations of a specially favorable environment, which 

 were entertained when the Nutrition Laboratory was located 



The Nutrition "^ Boston near the Harvard Medical School 



Laboratory. ^nd near several existing and projected hospitals, 

 are now fully realized; and it would appear that the Laboratory 

 is reciprocally advantageous to the several establishments 

 with which it is in immediate contact. Indeed, with this, as 

 with all other departments of research founded by the Institu- 

 tion, the only fears to be seriously entertained are those due to 

 increasing capacity for usefulness and scientific progress, since 

 such capacity tends quite properly to grow faster than the Insti- 

 tution's income warrants. 



The completion of adjacent buildings and streets has permitted 

 bringing the grounds of the Laboratory into harmon}^ with its 

 physical surroundings. Improvements have been made in the 

 Laboratory itself and several additions to equipment have 

 been installed. These latter include new respiration apparatus 

 for studies of metabolism in muscular work of men and of 

 small animals, a reconstruction of an earlier form of bed calor- 

 imeter, and additional apparatus for photo-electric registration 

 of physiological action in subjects under observation, whether 

 near by or at a distance. 



As indicated in previous reports, the Laboratory and its work 

 are subjects of international as well as national interest and many 

 cooperative efforts are arising therefrom. Thus, Dr. Hans 

 Alurschhauser, of the Kinderklinik in Diisseldorf, and Dr. Carl 

 Tigerstedt, of Helsingfors, have each spent several months at the 

 Laborator}'^ during the year as Research Associates; while M. 

 Lucien Bull, Assistant Director of the Institut Marey, in Paris, 

 spent several weeks at the Laboratory studying its apparatus and 

 methods. The researches in progress by the Laboratory staff 

 are briefly summarized by the Director under twenty different 

 heads in his annual report, to which reference must be made for 

 personal and technical details. Abstracts are given also in his 

 report of the publications issued during the year or now in press. 

 Of these, attention may be called particularly to "The gaseous 

 metabolism of infants with special reference to its relation to 



