APPENDIX I 
279 
entered as “abundant,” and among the captured two 
others. With these facts in mind we are prepared to 
examine the results of the kitchen and dining-room 
captures. 
The results so far stated have a distinct entomolog¬ 
ical interest as regards the exact food habits of a large 
number of species, many of the observations being 
novel contributions to previous knowledge of these 
forms; but the practical bearing of the work is only 
brought out when we consider which of these forms 
are likely from their habits actually to convey disease 
germs from the excrement in which they have bred, or 
which they have frequented, to substances upon which 
people feed. Therefore collections of the Dipterous 
insects occurring in kitchens and pantries were made, 
with the assistance of correspondents and observers in 
different parts of the country, all through the summer 
of 1899 and also in the summer and autumn of 1900. 
Such collections were made in the States of Massachu¬ 
setts, New York, Pennsylvania, District of Columbia, 
Virginia, Florida, Georgia, Louisiana, Nebraska, and 
California. Nearly all of the flies thus captured were 
caught upon sheets of the ordinary sticky fly paper, 
which, while ruining them as cabinet specimens, did 
not disfigure them beyond the point of specific recog¬ 
nition. The others were captured in the ordinary man¬ 
ner. 
In all there were examined 23,087 flies, which had 
been caught in rooms in which food supplies were or¬ 
dinarily exposed; and they may safely be said to have 
