114 American Milk-Condensing Factories. 
employment of machinery somewhat expensive and complicated, 
and efforts have been made from time to time \to accomplish 
the object by more simple 
methods and at less cost. 
Among the most success- 
ful methods brought to my 
notice was that adopted 
by Provost, of Orange 
County, New York. 
During the War of the 
Rebellion there was a 
large demand for con- 
densed and preserved 
milks, and the products 
of the Provost factory met 
with ready sale. During 
the year 1865 I visited 
this factory, and made 
drawings of its ground- 
plan, as shown in Fig 1. 
The establishment was 
then under the manage- 
ment of Dr. C. E. Crane, 
a very intelligent gentle- 
man, who went over the 
premises with me and ex- 
plained the various ap- 
pliances and machinery 
in use for manufacturing 
the milk. The process of 
evaporation was different 
from that of Borden, and 
was stated to be less ex- 
pensive, and to be effected 
with less heat. 
In this plan the engine- 
and-boiler room is lower 
than the floor of the eva- 
porating room, and the 
steam-pipes leading to 
the heating-vat and con- 
densing pan are carried 
along in the basement un- 
der the evaporating room, 
and are not represented in the engraving. Above the evaporating 
pan is a chimney-like ventilator, rising above the building, in 
