116 INJURIOUS INSECTS OF I909 AND IQIO. 
The case proper is 281% inches from top to bottom, 20 inches 
from front to back, and 1834 inches wide. It rests on five tin feet. 
The inner door consists of a plate of tin, around the margin of 
which, on the inside, there rests a V-shaped ridge, which fits into 
a gutter of the same form. The gutter is lined with heavy felt. On 
the outside of this inner door there occur at regular intervals nine 
tin buffers, ranged in three rows. These buffers are in the form 
of truncated cones, the bases of the cones constituting the outer por- 
tions of the buffers. The outer door is one and one-half inches 
i 
; 
Fig.67. The case with both doors removed to show 
trays for holding vials. 
from the inner one. It has upon its internal margin a square ridge, 
which fits into a square gutter exterior to the wall of the case. This 
gutter is also lined with heavy felt. The outer door is fastened in 
place by six clasps—one at the top and bottom, and“two at each side. 
They clasp around the base of the outer gutter. This outer door 
presses snugly against the buffers on the outside of the inner door; 
so that, when the outer door is firmly clasped in place, the inner 
