REPORT OF THE DIRECTOR. II 
Such research is elaborate, time consuming and costly, but the 
results are already such as to give great encouragement, and 
it is my belief that no work which the Station has attempted 
is producing or would produce results so valuable, whether 
viewed from the standpoint of pure science or that of practical 
utility, as this and kindred lines of investigation. 
Respiration calorimeter.—The metabolism experiments just 
referred to have been made by the use of the respiration calori- 
meter. Concerning the nutrition investigations in general and 
this apparatus in particular, the following statement may not 
be out of place here. It is taken from Bulletin 80, of the 
Office of Experiment Stations of the U. S. Department of 
Agriculture, a volume which was prepared to accompany the 
exhibit of American Agricultural Experiment Stations at the 
Paris Exposition of 1900: 
‘‘From the scientific standpoint, the most noteworthy feature of these 
inquiries is found in the researches with the Atwater—Rosa respiration calori- 
meter, by means of which the study of the application of the laws of the con- 
servation of matter and of energy in the human body are being carried out 
with a completeness not previously attained. Indications of the value of this 
apparatus and method of inquiry are already apparent in the fact that an 
apparatus on the same generai plan, but large enough for experiments with 
domestic animals, is already in process of construction at the Experiment 
Station of the State College of Pennsylvania, under the direction of Prof. H. 
P. Armsby, and in coéperation with the Bureau of Animal Industry of this 
Department. The Prussian Government has provided means for the con- 
struction of a similar apparatus for the Institute of Animal Physiology at 
Bonn, under Prof. Hagemann. An appropriation, under government author- 
ization, has also been made for the construction of a like apparatus in con- 
nection with the Institute of Animal Physiology at Budapest, under Professor 
ab an hrs 
EXHIBIT OF THE STATION AT THE PARIS EXPOSITION. 
By invitation of the Committee of the Association of Ameri- 
can Agricultural Colleges and Experiment Stations on a Col- 
lective Station Exhibit at the Paris Exhibition, a cabinet of 
forty-eight cultures of bacteria, isolated from various dairy 
products, and prepared by Prof. Conn, a bomb calorimeter 
with all its accessory apparatus, and a model of the respiration 
calorimeter were contributed to this general Experiment Sta- 
tion exhibit. The selection of these subjects was in accord- 
ance with the suggestion of the committee mentioned above, 
