418 Experiments on the Sense- Organs of Insects. [July, 
EXPERIMENTS ON THE SENSE-ORGANS OF INSECTS. 
BY A. S. PACKARD, JR. 
(PER interesting experiments of Mr. Trouvelot, degcribed in the 
April NATURALIST, which it should here be explained were in 
my hands eight years before their final publication, the MS. hav- 
ing been overlooked, led me to make similar experiments, which 
are offered here with the hope of stimulating some more com- 
petent observer to work up the subject in a more complete and 
scientific way. 
From a worker honey bee (Apis mellifica) I removed one 
antenna. It flew with difficulty and acted as if much hurt. On 
removing the other, except the first and second joints of both 
antennæ, it appeared to be semi-paralyzed, and on being tossed 
up in the air fell helpless to the floor, and did not at first walk 
about much, but in two or three minutes recovered sufficiently 
from the shock of the amputation to walk, though it had apparent- 
ly lost the power of coérdination and also the power of stinging ; 
but it soon recovered its strength enough to fly a little, and be- 
gan to dart out its sting, but most of the time it buzzed about 
on the table on its back. After four or five minutes it came to, 
and flew with a comparatively steady flight to the window on 
being thrown up in the air. It then walked up the window- 
pane. 2 
On removing the stumps of both antennz it was partially 
paralyzed, and dropped repeatedly on the floor upon being 
thrown up in the air. It did not regain its wits as soon as be- 
fore, but remained on the window-sill walking about, not climb- 
ing up the pane. It, however, had the power of pąrtially coördi- 
nating its steps, and would now and then clean its feelers (palpi) 
by drawing them through its jaws. It would not sting me even 
on pressure with the finger. Fifteen minutes afterwards 1t had 
not recovered the power of flying, and in_essaying flight would 
fall on its side, buzz about on its back, and then walk stagger 
along. The movements of the mouth-parts were not affected. One 
hour after deantennization it would remain motionless, and on 
violently tapping thé window-sill on which it rested it would not 
stir, but on touching it slightly it moved a little, and soon became 
motionless; after this a still heavier tap would slightly startle it. 
Upon depositing a drop of dissolved sugar within a 
head it did not notice it; on daubing it over the end of the 
line of its a 
