in my own experience, but in this instance it is especially remarkable that I should find a second individual of a species so rare in America that I had never been able to find one before; and although I overturned at least a thousand stones during my stay in Williamstown, I was never able to discover another specimen.” A few weeks earlier in the same summer, he recorded another incident which shows his alertness of eye and the success with which it was constantly rewarded. He was on a trip to South Amboy, to study orchids in a conservatory there. He wrote: “In a ramble near the station I found (as usual) exactly what I had started out to hunt for, a large patch of milkweed. This luck is an every day experience with me and has long since ceased to be a surprise. Once let my vision be set on the qui-vive for any given object, and I am led to it as by some irresistible intuition. No matter whether the object sought be a four-leaved clover, a certain flower, a rare caterpillar, a gold-bug or a ‘walking-stick,’ I am soon rewarded. I was desirous of discovering a specimen of an insect laden with pollen of milkweed. In less than ten minutes I found a large tract of pollen, in full bloom. In an instant more I detected a beautiful Cetonia beetle, nestling in a tuft of blossoms. Soon there came a small yellow hornet, which I captured. Its legs were fringed with the pollen-masses. So were the toes of the beetle.” Probably Gibson explains his own success in a sentence or two in one of his own chapters: “Anticipation is an equipment, the surest talisman to discovery, and anticipation may be quickened, either by pictorial hint or previous experience. The retina must be on the alert.” That certainly was true of his own eye, and the fact that he was such an enthusiastic seeker accounts in large measure for the fact that he was such a successful finder.