258 CARNEGIE INSTITUTION OF WASHINGTON. 



out of a carefully prepared plan, the main object of which is to study the 

 fundamental laws governing vital activity, particularly in humans, with 

 supplementary studies on warm-blooded and cold-blooded animals. 



An outcome of these cooperative investigations not originally anticipated 

 has been the establishing of two independent metabolism centers by former 

 collaborators in the Laboratory researches. Dr. Fritz B. Talbot, who is con- 

 tinuing the studies on infant metabohsm at the Massachusetts General 

 Hospital, and Dr. Elliott P. JosUn, who will carry further the researches upon 

 metabolism of diabetics at the New England Deaconess Hospital. Of interest, 

 also, is the fact that Professor H. Monmouth Smith, formerly an associate 

 of the Nutrition Laboratory, is carrying on metabohsm studies at the Mas- 

 sachusetts Institute of Technology. This stimulation to independent research 

 is very desirable, although it has led to the recent loss from the Laboratory 

 staff of two valued laboratory technicians. Miss Mary F. Hendry and Miss 

 Marion L. Baker. 



COOPERATING AND VISITING INVESTIGATORS. 



Dr. Elliott P. Joslin spent a large part of the year at the Laboratory with a 

 number of his personal assistants in preparing, with the help of members of 

 the Laboratory editorial and computing staff, the third report on diabetic 

 metabolism, which has recently been transmitted to the Carnegie Institution 

 of Washington. 



Dr. Howard F. Root, aside from his investigation on metabolism during 

 pregnancy, has continued his cooperation with Dr. Miles in the elaboration of 

 data collected by them on diabetic patients and in the taking of blood samples 

 on subjects used in the research on the effect of alcoholic beverages. 



Dr. Eugene C. Howe, of the Department of Hygiene, Wellesley College, has 

 cooperated with Dr. Miles in the securing of a large series of physical measure- 

 ments on women and in a study of the muscular control of women as repre- 

 sented in their ability to stand motionless. 



. Professor E. G. Ritzman, of the Agricultural Experiment Station at Dur- 

 ham, New Hampshire, has devoted practically his entire time to the conduct 

 of metabolism studies, with the large respiration chamber, on the energy 

 requirements of large animals. As in former years, the staunch support of 

 Director John C. Kendall has made possible this most profitable cooperative 

 undertaking. 



Miss Grace MacLeod, of Teachers College, Columbia University, New 

 York, has superintended the investigations on the metabolism of the white 

 rat, with a special respiration apparatus devised and constructed at the 

 Nutrition Laboratory and installed at Teachers College. The work has the 

 active support and counsel of Professors Henry C. Sherman and Mary 

 Swartz Rose. 



The work of the Nutrition Laboratory is attracting the attention of many 

 foreign visitors to this country, with whom most stimulating conferences are 

 frequently held. None have been more helpful to the Laboratory than those 

 with Professors Clemens Pirquet, of Vienna, and Joseph Barcroft, of Cam- 

 bridge, England. Dr. J. L. Rosedale, of the Institute of Animal Nutrition, 

 Cambridge, England, visited the Laboratory for a short time. 



