214 Trans. Acad. Sci. of St. Louis 
seems to me, would not need to be tortuous if the moths were 
flying with the wind, responding to a wireless telegraphic mes- 
sage. 
His next species for study was the oak-eggar or banded monk 
moth. A female brought males ‘‘hurrying from all directions-’’ 
about sixty keeping up their frenzied movements for three 
hours. He found that in this species also the males would find 
the females hidden in various kinds of receptacles, provided 
they were not too tightly closed, but they also did not find them 
in vessels hermetically sealed. Fabre then placed stenches of 
various kinds near the female in such abundance that he nearly 
asphyxiated her, thinking thereby to make her unrecognizable 
to the males. Numerous males arrived just the same, and made 
desperate efforts to reach her. Fabre then placed the female 
in a bell-jar on the window ledge, in full view of the incoming 
males, and threw the old wire cage upon which she had rested 
into a far dark corner of the room. The incoming males com- 
pletely ignored the female in full sight and flew to the far 
eorner of the room, and spent all the afternoon dancing around 
the deserted home which had held the prisoner some hours be- 
fore. Of course since it seems improbable that the old wire 
dome threw out Hertzian waves to which the males responded, 
Fabre concludes that ‘‘it is smell therefore that guides the 
moths, that gives them information at a distance.’’ Fabre then 
playfully placed his females for various periods on glass, wood, 
marble and cloth, and watched the males come to the objects, 
attracted there by the odor left by the female. He gives wind 
credit for naught, says nothing about it except of its impotence 
in the behavior of the moths. He does not face the final ques- 
tion of why the males came to that very room in that very 
house, if it were not that some of the odor-laden air passed out 
of the house and mingled with the passing winds. He concludes: 
‘*But what we are to say of the great peacock and the banded 
monk making their way to the female born in captivity? They 
hasten from the ends of the horizon. What do they perceive at 
that distance? Is it really an odor as our physiology under- 
stands the word? I eannot bring myself to believe it. * * For 
all his finess of scent the dog is incapable of such a feat, which 
is performed by the moth, who is put off neither by distance, nor 
the lack of any traces out-of-doors of the female hatched on my 
