LIFE HISTORY 
17 
been reared from cow dung. This dung was in a stable, 
and it is to be presumed that the conditions were such 
that the dung did not dry readily and that there was 
no preferred food in the immediate vicinity. Precon¬ 
ceived notions are also somewhat upset by the rearing 
of 267 flies from carrion found in the street. The list 
as a whole is of the greatest practical interest and is 
as follows. Number house 
Date Media dies bred 
Sept. 1-3 . 
.Rotten water-melon and muskmelon 
14 
Aug. 18 and 
Sept. 8-11 _ 
.Rotten carrots and cucumbers. 
23 
Sept. 7.. 
, Rotten cabbage stump. 
1 
Sept. 7. 
. Banana peelings. 
1 
Aug. 30.. 
.Rotten potato peelings. 
12 
Sept. 25.. 
. Cooked peas . 
1 
Oct. 1 .. 
.Ashes mixed with vegetable wastes. 
1 
Sept. 7-14 . 
. Rotten bread or cake. 
8 
Aug. 22 .. 
.Kitchen slops and offal. 
193 
Sept. 10-26. 
. Mixed sawdust and rotting vege¬ 
tables . 
4 i 
Aug. 30-Sept. 4. 
.Old garbage, city dump. 
15 
Aug. 14 and 18., 
.Rotten meat, slaughter houses. 
40 
Aug. 30-Sept. 11 
.Carrion in street. 
267 
Sept. 7. 
. Seepage from garbage pile. 
1 
Aug. 17-20 _ 
.Hogs’ hair, slaughter house waste.. 
9 
Aug. 23-28 - 
. Sawdust sweepings, Stock Yards 
slaughter house . 
no 
Aug. 23. 
.Sawdust sweepings, meat market... 
4 
Aug. 16-28_ 
.Animal refuse, Stock Yards. 
39 
Aug. 14 . 
. Contents of paunches of slaugh- 
tered cattle . 
168 
Sept. 2-11 . 
.Rotten chicken feathers. 
258 
Aug. 16. 
. Chicken manure, stock-car dump.... 
3 
Aug. 31-Sept. 7. 
.Cow-dung, stable, Urbana. 
997 
Sept. 7-10. 
. Cow-dung, outdoor yard . 
22 
Sept. 6. 
. Cow-dung, pasture . 
1 
Aug. 24-Sept. 16. Human excrement . 
196 
