“Some insects which imitate leaves extend the imitation even to the very injuries on those leaves made by the attacks of insects or fungi. Thus speaking of the walking-stick insects, Mr. Wallace says, ‘One of these creatures obtained by myself in Borneo (_ceroxylus laceratus_) was covered over with foliaceous excrescences of a clear olive green colour, so as exactly to resemble a stick grown over by a creeping moss or jungermannia. The Dyak who brought it me assured me it was grown over with moss, though alive, and it was only after a most minute examination that I could convince myself it was not so.’ Again, as to the leaf butterfly, he says, ‘We come to a still more extraordinary part of the imitation, for we find representations of leaves in every stage of decay, variously blotched, and mildewed, and pierced with holes, and in many cases irregularly covered with powdery black dots, gathered into patches and spots so closely resembling the various kinds of minute fungi that grow on dead leaves, that it is impossible to avoid thinking at first sight that the butterflies themselves have been attacked by real fungi.’” I can no more believe that these artificial fungi in which the moth arrays itself are due to the accumulation of minute, perfectly blind, and unintelligent variations, than I can believe that the artificial flowers which a woman wears in her hat can have got there without design; or that a detective puts on plain clothes without the slightest intention of making his victim think that he is not a policeman. Again Mr. Mivart writes:— “In the work just referred to (‘The Fertilisation of Orchids’), Mr. Darwin gives a series of the most wonderful and minute contrivances, by which the visits of insects are utilised for the fertilisation of orchids—structures so wonderful that nothing could well be more so, except the attribution of their origin to minute, fortuitous, and indefinite variations.