Y. Henderson 53 
The object of this papér (the last of the series) has been to 
make more easily available facts and methods already known. 
The object of the entire series has been to emphasize the wide 
range of methods and problems for which gas analysis is a 
master key. 
The expenses of all the investigations of this series of papers 
have been defrayed by the Loomis Medical Research Fund. 
BIBLIOGRAPHY. 
1. Carpenter, T. M., A comparison of methods for determining the re- 
spiratory exchange of man, Carnegie Institution of Washington, Pub- 
lication No. 216, 1915. ; 
vawourias, GaG., Je Physiol. 1911, xls p. xvii: 
3. Haldane, J. S., Methods of Air Analysis, London, 1912. 
4. Williams, H. B., Riche, J. A., and Lusk, G., J. Biol. Chem., 1912, xii, 
357. : 
5. Henderson, Y., Chillingworth, F. P., and Whitney, J. L., Am. J. 
Physiol., 1915, xxxvili, 1. Haldane, ibid., 1915, xxxviii, 20. 
6. Henderson, Y., and Prince, A. L., Am. J. Physiol., 1914, xxxv, 106. 
7, Martin, ©. J., Jo Physiol., 1914, xviii, p. ‘xv. 
