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THE CAUSE AND THE CAUSER. 23 thinks it is easy to be courageous when you know you can eat your enemy up. Commend me to the courage of a shy being who dares an experiment in the face of an indefinite risk! The professor had wearied of so much talking and the bandying backwards and forwards of small witticisms. "It's the bumble's vocation," thought he to himself, and I suppose they must practise for it, but it brings one no nearer the mark, and that's where I want to be. I go in for discovery and honour. Perhaps that's a professor's vocation." Perhaps it is. Certainly it was a great moment for Dr. Earwig, when, in pursuance of his determination to do and dare," he ran up the spike of an orchis plant and wriggled himself on to the tongue-like lip of one of the flowers, in order to peep inside. The tiny chamber was dark enough at first, but by degrees he could discern objects, and perceived in front of him, but quite above his head, a roundish protuberance or shelf overhanging the entrance to the throat-like flower-pouch (called nectary), in which insects find their food. And upon this shelf (how the professor's heart glowed