1883.] Experiments with the Antenne of Insects. 1243 
put the camphor end near to its head and mouth-parts, it would 
begin to struggle with all its might as if to get away from the 
fumes of the camphor; thus showing not only that it disliked 
the smeil of camphor, but also that it did not smell with its 
antenne. After experiments have shown the same thing of 
other insects. 
I will add here that this butterfly (as also many other species) 
was little or not at all affected by deantennization, but flew about 
the windows for many hours afterward, and when finally turned 
out of the door, flew away as happy as ever. 
8. This case represents many others which seem to me to 
point to a sense residing in the antennz, and which out of respect 
to old custom and belief I call feeling, for want of a better name. 
I found a young grasshopper-like insect sitting on the edge of a 
bucket of water. I found that on putting my finger to one side 
or the other of its head, it would throw the antenne, which was 
two or three times the length of the body, on that side, towards 
my finger, and if it could reach it would touch it, though very 
slightly, as if to feel for it. If I moved my finger to the other 
side, it used the other antennz in the same way, or if I put my» 
nger where it could use both at the same time, as in front, 
or above, or behind it, it did so. I do not wish, however, 
to be understood to say that the sense of touch lies in the an- 
tenne, : 
9. Add, lastly, to these the following: Toward the latter end 
of summer an old gentleman sent me for experiment a large 
Specimen of the common crab. I placed it in a bucket of clear 
water and then found that whenever I put anything anywhere 
Near it, it would throw out its antennz, on one side or the other, 
and touch it slightly, much as the one last given. When left to 
itself it would invariably sit with the antenne in a horizontal 
Position and at right angles with the line of the body. But when 
I cut off one it instantly pointed the stump forwards and upwards 
While it held the other in the same position as before. Otherwise 
It was not affected by the mutilation, but used the stumps as be- 
fore, But when I smeared both well with pepper-sauce it would 
not even feel with them till the water had cleaned them off. It 
ved many days after deantennization, and seemed to thrive as 
Well as ever. 
Conclusions.—From all the experiments I have made, of which 
VOL, XVII.—No, XIL 82 
