Pulmonary Gases in the Respiration of Man. 219 



1st. The oxygen consumed falls as the temperatures rise. 



2nd. The carbonic acid produced falls at a similar rate, under the 



same conditions of temperature, or as the temperatures 



rise. 



3rd. The oxygen absorbed increases as the temperatures rise. 

 4th. The ratio of oxygen consumed to carbonic acid produced falls 



as the temperatures increase. This is a natural consequence 



of the corresponding variation of the oxygen consumed and 



carbonic acid produced. 



This chart is made by grouping* the temperatures as follows, and 

 classing the figures for oxygen consumed, carbonic acid produced, 



winter temperatures, when an accession of cold is to be met by an increased oxida- 

 tion in the body. Summer temperatures may act altogether in a different way. 



