378 
POPULAR SCIENCE REVIEW. 
When the air is below 70° there is always a well marked 
rise in the body-temperature on stripping, greater as the inten- 
sity of the cold is greater, as might be expected from the 
previous explanation. The preceding and following Tables 
will illustrate this at a glance : — 
Time 
Temperature 
Temp, of Air 
Time 
Temperature 
Temp, of Air 
10-46 
10-50 
10- 55 
11 P.M. 
11- 5 
11-10 
11-15 
11-20 
Str 
Bis 
98-1 
98- 
97- 925 
98- 
98-19 
98-35 
98-4 
98-425 
ipped at 1 0.55 
ie 0°-5 
r-59 0 
- 
11-5 
11-10 
11-15 
11-20 
11-25 
11-30 
11-35 
11-40 
Stri 
Bis 
99- 
99- 
99- 
99- 
99-05 
99-19 
99-21 
99-19 
ipped at 11.15 
e0°-2 
67° 
The cutaneous contraction at temperatures below 70° is there- 
fore more than sufficient to make up for the loss of the clothing 
if the experimenter remains quiet, which was always the 
case in the above instances ; and it is quite surprising for how 
long a time it is possible, on this account, to stand nude in an 
atmosphere even as cold as 40°, without any inconvenience or 
unpleasant sensations in the extremities. In fact, as has been 
remarked by others, it is only a way of taking a bath — an air- 
bath — milder, it is true, than a sponge-bath, but almost equally 
beneficial in a sanitary point of view. 
After having remained some time in this cold air-bath 
suppose the experimenter to reclothe, or to get into bed. By 
so doing it is evident that all the previous compensating 
arrangement has to be much modified if the uniformity of the 
temperature is to be maintained. And such is the case. The 
primary effect of the contact of the clothing is to prevent any 
further conducting away from the surface of the heat, not great 
in amount, which the previously chilled, and if very cold, 
66 goosey ” skin, has been losing. Within a short time the 
clothes get warmed, and before long become sufficiently heated to 
cause a universal relaxation of the cutaneous muscular arteries, 
which allows of a full flow of blood into the capillaries, in such 
cases known as the glow, at the moment of production of which 
the temperature of the body commences to fall rapidly, and 
continues to do so for some half-hour or more, because the 
blood, entering the skin in abundance, imparts its heat freely to 
the still only partially-warmed clothing, and receives no extra 
supply to compensate for its loss. The glow aftsr a cold-bath 
