INJURIOUS INSECTS OF IQ0Q AND IQIO. I1g 
in copper wire cloth, No. 60 mesh, so that only very minute insects 
could get through it. Along one side of the wire cloth were cut five 
small openings, the edges of which were deeply jagged. The indi- 
vidual scallops or jags in each opening were turned backward 
over a ring of cork, of such size that it would fit tightly into the 
base of a lamp-chimney; then this jointure or junction was rein- 
forced with putty, which was tied in place with cloth bands until it 
got hardened. The outer ends of the lamp-chimneys, which made 
this close connection with the interior of the wire cloth case, were 
closed with removable tin box caps. The wire cloth was nailed 
down to the log, along one side and at the ends, with small staples ; 
and the connection between the two ends of the cloth, so caught 
Fig. 70. A four-foot two-inch log covered with wire gauze and 
chimneys in place. Franklin. 
together along the side of the log, was made tight with putty. 
Small pieces of cork were nailed to the side of the log underneath 
this putty line, so that beetles which might emerge would have free 
chance to move all over the log, excepting around the ends, where 
they were shut off by cotton stuffed inside of the cloth and around 
the ends of the log. After everything was made tight in this way 
—the lamp-chimneys being in place, and their ends being held up 
from the ground in a _ horizontal position by cross-sticks placed 
under them—the whole cage was covered with coarse sacking and 
paper, and then this sacking and paper was covered with sand. 
leaving only the lamp-chimneys protruding. In this location the 
