a) i MR AR A ale 
54 Contagious Diseases of the Chinch-bug. = det 
gin to increase in your boxes, you may commence to gather 
them for the infection of your field, but not before. Youshould ~_ 
be able to do this in three or four days. Always leave afew _ 
fungus-covered bugs in your boxes for continued infection. Re- 
place the green wheat or corn as often as it becomes yellow, and _ kin 
keep the boxes replenished with healthy bugs from the field. 
\ 
TO INFECT A FIELD WITH THE WHITE-FUNGUS DISEASE. 
After you are made certain by the increase of the number 
of bugs covered with the white fungus that the infection is oe 
working in your boxes, you should gather from the boxes dead 
bugs and live bugs, white-fungus-covered and non-white-fungus- 
covered, and scatter them in the field where the bugs are the 
thickest, in the axils of the leaves and at the bases of the stalks. 
If the fungus-covered bugs are abundant in the boxes the earth 
might be taken from half of the boxes together with the bugs 
and scattered in the field. The earth should be replenished as 
often as removed. You should always take care, however, that 
some white-fungus-covered bugs remain in your infection-boxes. 
As fast as the bugs are taken from the infection-boxes they 
should be replaced by fresh bugs from the field. Continue to 
scatter bugs from the infection-box over the field at intervals of 
two days or less, until it is seen that the bugs are dying rapidly 
all over the field. ( 
CONTINUED CARE OF BOXES. 
If after a time the boxes should give off a smell of ammonia, 
from the decay of bugs or bits of wheat or corn left in the boxes, 
the boxes should be cleaned out, earth and all, and, after airing 
a day, started anew as at the beginning. 
Keep the earth in the boxes moist, but never make rt muddy. 
Sometimes other fungi than the white Sporotrichum appear 
on the bugs in the boxes. The only annoying one likely to ap- 
pear is a yellowish-brown one known as Aspergillus. This 
fungus does not kill the bugs, but it may take possession of their 
dead bodies and become detrimental to the growth of the white 
fungus. If the Aspergillus should appear extensively in the 
boxes, clean them out and burn hay in them, to kill the spores, 
and then start the boxes again as at the beginning. | 
