so3 Dr. Atkin on ■preferving Health 
take in no nutriment whatfoever, and therefore 
are not injured by abfolute reft. 
Exercife is probably ferviceable, both by pro¬ 
moting the difcharge of effete and corrupted 
particles by excretion, and by augmenting the 
animal heat. As far as cold in itfelf can be 
fuppofed a caufe of difeafe; its effedls will be 
moft dire&ly oppofed, by increafing the internal 
or external heat. And this leads to the confi- 
deration of the further means for guarding 
againft and tempering the intenfe feverity of the 
wintry air in thefe climates. 
It appears from the journals of the unfortunate 
fufferers in thefe attempts, that they endured 
great miferies from the cold; their fuel foon 
proving inefficient for their confumption, and 
their daily increafing weaknefs preventing them 
from fearching for more, or keeping their fires 
properly fupplied. On the other hand, the 
Englifh and Ruffians had not only made their 
huts very fubftantial, but had fecured plentiful 
fupplies of fuel. And the nations who con- 
ftantly inhabit the arftic regions, are reprefented 
as living in an actually warm atmofphere in their 
fubterraneous dwellings, and guarded by impe¬ 
netrable coverings when they venture abroad. 
The animals, too, which retire during the winter, 
are always found in clofe caverns, or deep burrows, 
rolled up, and frequently heaped together in 
numbers, fo as to preferve a confiderable degree 
of 
