PKACTICAL PAPERS—PASTEBOARD HOUSE COVERING. 323 
It is used advantageously in various ways; either on the 
studs outside as a substitute for sheathing, or over the sheath¬ 
ing before siding; or on the inside of the studs before lathing, 
so as to form an extra dead air space. It is laid under floors 
and on roofs below the slates or shingles for the purpose of 
keeping out air and cold, and it may also be used as a substi¬ 
tute for inside plastering. It is found to make a very smooth, 
nice finish for a wall or ceiling, and to save four-fifths of the 
expense of ordinary plastering. It can be tacked on over the 
laths and then whitewashed or papered in the usual manner. 
In this way a wall warmer than plastering may be secured, 
and it will be equally as good, if used with care, for all pur¬ 
poses. It will not crack or fall off, and it commends itself 
to those who build in earthquake countries. It can be put on 
by almost any one, it being merely tacked on with ordinary 
tacks. 
The cost of this sheathing-board is slight. It is sold by the 
pound at five cents for the bituminized, and six cents for the 
plain. Thus one square yard of the bituminized costs eight 
cents, and the plain seven cents and a half. A house twenty- 
two by thirty-six feet and twenty feet high can be covered 
with this saturated board for less than twenty dollars. 
Some of the principal advantages of this sheathing-board 
are: First, its cheapness compared with boards or plastering. 
Second, the rapidity with which it can be put on, and thus 
render in a few hours a bare frame habitable. A house lined 
with this board can be safely occupied immediately, while a 
plastered house requires months to become dry. Third, it is 
warmer than boarding or plastering, for <yit does not conduct 
heat so rapidly, and a room so lined can be warmed in a few 
minutes by a moderate fire, while in a plastered room it takes a 
long time to heat up the walls. 
[To the readers of this volume, it will be interesting to 
know that the Eoek River Paper Company, to which reference 
is made in this report of Col. Bowen, does its manufacturing 
at Beloit, Wisconsin, under ths business direction of our fel- 
