290 The Increase in the Number of Erythrocytes with Altitude 
We note that the defect due to destruction in malarial fevers would seem to 
be rapidly recovered from. Those cases which developed fever early after their 
arrival had at least recovered their original number of erythrocytes by the end 
of the anti-rabic treatment. 
We extracted from our original distribution all anaemias as well as cases 
of malarial fever. Tliis was done in order to determine the variability of the 
number of erythrocytes in apparently healthy individuals. Table VIII gives 
the first and second counts of these extracted anaemias. Most of these, although 
not all, have reached at the time of their second count the total which we 
found on the average to be necessary for apparently healthy individuals living 
at a height of G000 feet above sea-level. Those who failed to do so, would, 
we should expect, not benefit markedly by residence at a high altitude, unless 
carefully treated and kept absolutely at rest in bed. This is in accordance with 
clinical experience. 
TABLE VIII. 
Anaemias. 
First Counts 
2,920,000 
3,024,000 
3,040,000 
3,168,000 
3,168,000 
3,376,000 
3,440,000 
3,536,000 
3,696,000 
3,792,000 
3,840,000 
3,840,000 
3,928,000 
3,952,000 
4,048,000 
4,112,000 
4,128,000 
4,272,000 
4,608,000 
4,752,000 
4,848,000 
5,216,000 
5,360,000 
5,424,000 
5,792,000 
Second Counts 
4,040,000 
3,835,000 
4,241,000 
4,672,000 
4,188,000 
4,632,000 
4,688,000 
7,328,000 
5,104,000 
6,496,000 
5,208,000 
5,080,000 
4,696,000 
6,208,000 
7,280,000 
5,152,000 
5,632,000 
5,478,000 
6,096,000 
5,760,000 
5,568,000 
6,768,000 
5,376,000 
8,704,000 
6,308,000 
Total Gain 
1,120,000 
811,000 
1,201,000 
1,504, 00C 
1,020,000 
1,256,000 
1,248,000 
3,792,000 
1,508,000 
2,704,000 
1,368,000 
1,240,000 
768,000 
2,256,000 
3,232,000 
1,040,000 
1,504,000 
1,206,000 
1,488,000 
1,008,000 
720,000 
1,552,000 
16,000 
3,280,000 
516,000 
