FUMIGATION METHODS 
140 
Estimating cubic contents.—The following excellent 
method for determining the cubic contents of a green- 
cases where fumigation with this gasis to be followed 
house has been suggested by Dr. B. T. Galloway: In all 
it is necessary to first determine accurately the cubic 
The determination of the 
contents of each house. 
a8 
a a 
AH rT Ts ie 
Hien 
Senee 
See 
FIG. 72—DIAGRAM ILLUSTRATING METHOD OF DETERMINING 
(AFTER GALLOWAY) 
CUBIC CONTENTS OF GREENHOUSE, 
while in itself a compara- 
in the eyes of many grow- 
cubic contents of the house, 
tively simple problem 
has, 
’ 
difficulties which they are not willing to under- 
The cubic contents can be determined by a 
comparatively simple mathematical calculation, but 
perhaps the easiest way is by the square method. 
ers, 
take. 
This involves nothing more difficult than the mere 
On examining 
Fig. 72 the simplicity of the method will become 
counting of a number of squares. 
