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pearance of the fungus. July 3, in good condition, but no fungus 
developing. Fresh food and live insects from reception box in¬ 
troduced. July 4, very clean and free from mold; very little 
fungus present; growth not rapid; food changed. July 5, fresh 
food and live insects added. Anguillulids noticed in abundance in 
the earth. July 6, a few chinch-bugs with Sporotrichum. Fresh 
food and live bugs introduced. July 8, no bugs with fungus seen. 
Box in clean condition. Four cicadas, dead and well covered with 
this same fungus, collected at Mahomet by Mr. E. B. Forbes, 
were broken up and the fragments distributed along the sides and 
corners of the box where live chinch-bugs were most numerous. 
July 10, boxes overhauled and cleaned and fresh food and more 
bugs introduced from reception box. A small number of insects 
dead with the fungus seen. July 11, very little Sporotrichum 
seen. Box in good condition. Fresh food added. July 12, fresh 
food introduced. Box in fair condition. July 13, about as yes¬ 
terday. July 14, fungus scant; fresh food. July 16, three or four 
bugs with fungus seen; fresh food and live bugs introduced. July 
17, no fungus found. Part of the food changed. July 18, very 
little fungus seen. Fresh food and more bugs introduced. The 
amount of water used in box increased. 
July 19, about half a dozen bugs dead with the fungus. A 
fourth infection, coming from No. 11, a culture on agar, was in¬ 
troduced at this time. July 20, bat little fungus seen. Slight 
mold on earth. Spoiled food removed. July 21, box overhauled 
and fresh food introduced. Fungus about as yesterday. July 23, 
five or six bugs with Sporotrichum seen. The box contains less 
mold than any of the others (69, 70, and 71) and fewest fungus- 
covered insects. More live chinch-bugs from reception box added. 
July 25, overhauled and food renewed. Only about half a dozen 
fungus-covered bugs seen. Many anguillulids were found quite 
abundant on bugs dead with and without the fungus, also on the 
culture medium. A piece of this material upon which both Spo¬ 
rotrichum and Aspergillus were growing was washed and found 
to contain a considerable number of anguillulids, both dead and 
alive, confined principally to the surface, or slightly imbedded in 
the softer and somewhat decomposed spots. July 26, Sporotri¬ 
chum very scarce. July 27, transferred contents, except sand, 
dead insects, and a few live bugs, to No. 69. Yery little fungus 
seen. July 30, fungus greatly increased, 165 insects dead with this 
disease removed. Sand and interior of box thoroughly wet. July 
31, quite a number of dead bugs have a fresh fungo as growth ap¬ 
pearing. A few mites seen. 
August 1, seventy insects dead with Sporotrichum removed. 
Large numbers of chinch-bug eggs found on the sand and on the 
older corn leaves. Young chinch bugs, recently hatched, had 
been noted here for several days. A considerable number of 
young insects also present. All the sand removed, box scraped 
and brushed, allowed to stand until nearly dry, then wet with 
alcohol and burned out. A layer of fresh earth from half to three 
quarters of an inch deep placed in bottom and cultivated fungus 
