294 



RESPIRATION 



at which the change occurred and disappeared in one of the 

 members of the Pike's Peak expedition, and Figure 73 shows the 

 far faster rate of increase in haemoglobin in Mr. Richards, a 

 mining engineer who kindly made for me a careful series of 



observations on himself on going to a mine in Bolivia at a height 

 of 15,000 feet. Figure 72 also shows the changes in blood volume 

 and total haemoglobin in the body (total oxygen capacity). It 

 will be seen that after the first few days the blood volume in- 



