MOONLIGHT ON MUS-TAGH-ATA 383 
Date and Hours. 
Temperature. 
Pui.se. Altitude. 
August 6, 
Myself . 
9S'9 
Fahr., 3 5° 5 C. 
86 
1^ 17,390 ft. 
12 noon. 
Yehim . 
96“ 
„ 3S°C „ 
82 
f (17,200 ft.) 
Augu.st II, 
Myself . 
97°2 
„ 36°2 „ 
94 
) 18,700 ft. 
j” (18,600 ft.) 
2 p.m. 
Islam . 
Yehim . 
96“ 
96°6 
,> 3S°6 „ 
3S°9 - 
86 
84 
August 16, 
8 p.m. 
Myself . 
Islam . 
Yehim . 
95°6 
97“9 
97°9 
!) 35 3 » 
„ 36°6 „ 
,, 36°6 „ 
106 
98 
1 16 
) 20,660 ft. 
j (19,500 ft.) 
August 17, 
9 pm. 
Myself . 
Islam . 
Yehim . 
97° 
97°9 
98“ 
36°! „ 
36°6 „ 
.. 39°7 .. 
102 
82 
84 
) 14,440 ft. 
^ (14,100 ft.) 
Although this table contains a number of exceptions, it 
would certainly seem to indicate that the temperature 
decreases, whilst the pulse quickens, according as the 
altitude increases. There would also appear to ensue a 
moment of slup’oishness ; for on descending: from a con- 
siderable height the pulse continued for some time to beat 
more quickly than the normal rate. In my own case the 
temperature varied, as a rule, not much more than a 
degree, and my pulse remained fairly regular. This was 
probably due to the fact that I carefully avoided all 
unnecessary physical exertion, while my men, on the 
contrary, often walked. The greatest variation of the 
pulse was in the case of the Kirghiz, Yehim Bai. At 
13,450 feet his pulse was 66, and at 20,660 feet it was 
1 16; that is to say, it quickened at the rate of fifty beats 
in a little over 7200 feet. The irregularity in the figures 
of the table is no doubt attributable to several other 
causes, such as, for instance, greater or less physical 
exertion, greater or less susceptibility to the rarefaction 
of the air, accidental indisposition, and the like. Never- 
theless I always made a point of taking these observations 
after a rest of suitable length, so as to eliminate the effects 
of breathlessness, violent perspiration, and undue accelera 
tion of the heart’s action, as also to allow of recovery from 
the worst feelings of fatigue. 
Our experience demonstrated, on the one hand, that 
it was impossible to reach the summit in one day, the 
