Excerpt from The Antananarivo Annual and Madagascar Magazine, Vol. 4: 1889-1892
Another caterpillar of a Bombyx feeds on the Eucalyptus (red), geranium, and a native shrub, and nothing else, and will readily change from one to the other. What is there in common between such d... issimilar plants? There is a great field Open for investigation here, and one in which, after three years' careful study, I have myself made no progress. Some moths will lay their eggs on a wall near which at least ten different kinds of plants grow, all equally remote from the eggs. As soon as the young are hatched, instinct leads them to one, and one only, of these ten bushes. I have taken the eggs and put them so that there was no plant on which they commonly fed near. The young when hatched wandered helplessly about and perished. There are many caterpillars which will eat anything, more especially the hairy kinds, but very many are most exclusive. (the readers of this paper must excuse the digression.)
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