DREER’S VEGETABLES UNDER GLASS. 33 
A Pennsylvania or New Jersey trucker, visiting New 
England, is surprised at the number and size of the vegeta- 
ble forcing houses to be seen at Arlington, Belmont and 
other suburbs of Boston, near Providence, Rhode Island, and 
elsewhere. The largest of the Rawson greenhouses, at Ar- 
lington, attains to the great size of 50 by 4oo feet, with panes 
of glass 20 by 30 inches in dimensions. 
Many establishments in the same neighborhood have 
houses almost as extensive. John S. Crosby, William H. 
Allen, D. L. Tappan and others have very large under-glass 
SMALL DOORS IN NORTH SIDE OF BOSTON FORCING HOUSE. 
establishments at Arlington ; and the Hittinger Brothers, at 
Belmont, have a place that is a model in all recent green- 
house appliances. These people and their neighbors grow 
acres of lettuce, cucumbers, radishes, &c., in the winter time 
and exchange their products for bank accounts. 
The illustrations show the general plan of construction 
of the New England vegetable greenhouse. The beds are 
made upon the ground, and the soil (in most of the houses) 
is changed or ‘‘shifted’’ every year, wholly or in part. The 
method of using the forcing house to best advantage, in point 
