The immediate development and construction of suitable apparatus for
studying the complicated processes of metabolism in man was obviously
the first task in equipping the Nutrition Laboratory. As several series
of experiments have already been made with these respiration
calorimeters, it is deemed advisable to publish the description of the
apparatus as used at present. New features in the apparatus are,
however, frequently introduced as opportunity to increase accuracy or
facilitate manipulation is noted.
We wish here to express our sense of obligation to the following
associates: Mr. W. E. Collins, mechanician of the Nutrition Laboratory,
constructed the structural steel framework and contributed many
mechanical features to the apparatus as a whole; Mr. J. A. Riche,
formerly associated with the researches in nutrition in the chemical
laboratory of Wesleyan University, added his previous experience in
constructing and installing the more delicate of the heating and cooling
devices. Others who have aided in the painstaking construction, testing,
and experimenting with the apparatus are Messrs. W. H. Leslie, L. E.
Emmes, F. L. Dorn, C. F. Clark, F. A. Renshaw, H. A. Stevens, Jr., Miss
H. Sherman, and Miss A. Johnson.
The numerous drawings were made by Mr. E. H. Metcalf, of our staff.
BOSTON, MASSACHUSETTS,
_August 10, 1909._