10 BULLETIN NO. 3, DIVISION OF ENTOMOLOGY. 
state that on the Department grounds at Washington the newly-hatched 
worms have been found in a folded clover leaf, feeding thus protected, 
and under such circumstances as rendered it probable that they had 
been hatched there. 
Mr. Loekwood stated in his report (see last Annual Report of this 
Department) that even the common rag-weed (Ambrosia artemisiefolia) 
was eaten clean by the worms, and also that the worms in passing 
through a strawberry patch devoured both the leaves of the plant and 
the unripe fruit. 
In order to establish upon proper authority the facts concerning what 
the Army Worm will and will not eat when pushed by hunger, we con- 
ducted during the summer of 1881-82 a series of experiments upon dif- 
fereut plants, placing each plant in a separate breeding-cage with a few 
healthy half-grown larve. The results show an unexpected power of 
accommodation to plants in many families, and no resultant variation 
in the imagines worth mentioning. 
The results are summarized below : 
PAPAVERACE®.—Papaver somniferum. (Garden poppy.) 
Of four larve all attained full growth and entered the ground. Three 
moths issued. 
CRUCIFER.&.—Brassica oleracea. (Cabbage.) 
The four larve in this case moved restlessly about for the first day 
without feeding. The second day they began to feed, and by the fif- 
teenth all had changed to pupa. In this state two died, but the other 
two issued as moths. ; 
CRUCIFER©.—Raphanus sativus. (Raddish.) 
Of four larve two lived to issue as moths; one died in the pupa, and 
one in the larva state. 
MALVACE#.—Gossypium herbaceum. (Cotton.) 
All died after feeding slightly. 
VITACE&X.— Vitis labrusca. (Grape.) 
All died without feeding. 
LEGUMINOS& —Pisum sativum. (Garden pea.) 
Of five larvee, all fed abundantly ; transformed and issued as moths. 
LEGUMINOS ©.—Phaseolus vulgaris. (Garden bean.) 
All died without touching the leaves. 
RosacE.#.—Fragaria virgimensis. (Strawberry.) 
The four larve experimented on all fed for from seven to ten days 
and then died without transforming. 
ROSAcCE &.—Rubus strigosus. (Raspberry.) 
Of eight larve, all fed well and all transformed to pup; only four, 
however, issuing as moths. 
