132 
BIOLOGY: E. HUNTINGTON 
permanent racial difference of no more than 5° and possibly less, while 
the short time that the American people have been in their present 
surroundings appears to have caused no differentiation. 
In spite of the apparent fixity of the optimum there appears to be 
a marked adaptation to other conditions. This is illustrated in table 
5, where the smoothed death-rate for New York and Los Angeles at in- 
tervals of 2.5° is given in percentages of the average per year. The table 
brings out the far greater range of temperature at New York than at 
Los Angeles. It also brings out the curious fact that while the worst 
TABLE 5 
Deaths in Variable and Uniform Climates 
ra^^^- CITY BALTIMORE JAPAN ^^^SCO ^-OS ANGELES 
30.0°..' 107.0 
32.5" 106.5 109.5 
35.0** 105.5 106.0 
37. 5** 104.5 104.5 107.0 
40.0" 103.0 101.5 102.0 
42.5" 102.0 100.0 100.5 
45.0" 101.0 98.5 98.5 
47.5" 100.5 97.5 97.5 
50.0" 99.5 96.5 96.5 117 
52.5" 98.5 95.5 96.0 108 117 
55.0" 97.5 94.0 95.0 102 113.0 
57.5" 96.5 92.5 94.0 90 103.5 
60.0" 95.5 91.0 93.0 91 97.0 
62.5" 95.0 90.0 91.5 93.0 
65.0" 94.5 89.5 92.0 91 
67.5" 95.5 90.0 95.0 86? 
70.0" 98.0 91.0 98.0 92 
72.5" 106.0 94.5 102.0 
75.0" 102.0 105.5 
77.5" 118.0 109.5 
80.0" 115 
Range from highest to lowest 11.5 20 23.5 27 31 
months at New York have only 107 deaths where the average is 100 and 
the best only about 94, the range at Los Angeles is from 117 to 86. With 
less than half as great a range of temperature Los Angeles has two and 
one-half times as great a variation in the death-rate. The health seekers 
who visit southern California in the winter account for a small part of 
this difference, but by no means for all of it. At the range of tempera- 
ture prevailing in Los Angeles the New York death-rate varies only 
about 4% or less, while that of Los Angeles varies 31%. If the influx 
of health seekers explained the matter they would have, to increase the 
population of Los Angeles by more than a quarter of its normal propor- 
