190 S. Webber on Ventilation. 
ture, say 76° of Fahrenheit, shew often manifest signs of undue 
dryness. The effects upon the human system, especially in a 
person unaccustomed to it, are an unusual dryness of the air-pas- 
sages of the mouth and throat, creating a disposition to thirst, 
and requiring a larger supply of fluid in the way of drink, than is 
customary in the cold season of the year, while if, as is com- 
the case in this season even in the house, the dress is ma- 
of the atmosphere. gt 
Now the effect of throwing into air already warm and unduly 
moist, a large additional supply of warm vapor, as is the case 
when water is suffered to evaporate from the top of a stove, 1s to 
produce a relaxing effect upon all the surfaces of the body expose 
to its influence, both the mucous membranes and the skin, and 
thereby to render one more liable to feel the ill effects of a chee: 
from coming in contact with the cold external air. If any thing 
in the way of an extra supply of moisture were advisable or ad- 
missible, it would be simply to place a vase or two of water 17 
different parts of the room, and let the air drink from it gradually 
and at its own temperature, a sufficient supply of moisture to sat- 
isfy its capacity. It would thus be naturally saturated, and Bo 
more ; and the furniture at least would escape injury; and pos 
sibly, perhaps probably, the human form would receive no dettt 
ment, if the warmth of the room was limited ,to about 62°-65°, 
which will be quite sufficient for comfort for, healthy persons 
fairly clad for the cool or cold season. In the case of im’ ids 
some departure from these limits both of warmth and moistut®, 
may be advisable according to circumstances, but these should be 
regulated by the advice of the medical attendant, to suit the re- 
“quisitions of each case. 
Thal ean see 
