Mr. Wilson, that enthusiastic student of bird life, writes in his usual interesting manner concerning the habits of the Pileated Woodpecker. In his “American Ornithology” he says: “Almost every old trunk in the forest where it resides bears the marks of his chisel. Wherever it perceives a tree beginning to decay, it examines it round and round and with great skill and dexterity strips off the bark in sheets of five or six feet in length, to get at the hidden cause of the disease, and labors with a gayety and activity really surprising. I have seen it separate the greatest part of the bark from a large, dead pine tree, for twenty or thirty feet, in less than a quarter of an hour. Whether engaged in flying from tree to tree, in digging, climbing or barking, he seems perpetually in a hurry.” During the mating season it is exceedingly noisy, not only spending much time in drumming, but also frequently uttering its love notes which to Mr. Nehrling sounds like “a-wuck, a-wuck.” Mr. Chapman describes their usual call note as a “sonorous cow-cow-cow, repeated rather slowly many times,” and when two birds come together they utter a “wichew note” similar to that of the flicker. Its note of alarm has been likened to an oft-repeated ha-he, ha-he, ha-he. The same observer hears in its call note a constant repetition of a-wick, a-wick and at times tack-tack-tack. For its nest the Pileated Woodpecker excavates cavities in tree trunks at heights varying from twenty to eighty feet above the ground. Both sexes assist in the work of making the cavity which, Major Bendire states, “vary from seven to thirty inches in depth, and is gradually enlarged toward the bottom, where it is about six inches wide.” He also says that it takes from seven to twelve days to complete it and when completed it is quite an artistic piece of work, the walls of the cavity being quite smooth and the edges of the entrance being nicely beveled. The eggs are usually deposited on a layer of chips. Not infrequently every chip, as soon as it is loosened, is removed to a distance in order to remove every trace of the nesting site. Birds as well as other animals are afflicted with parasitic worms. Mr. Langdon found on dissecting a Pileated Woodpecker, a “slender tape-worm about fifteen inches long and one-thirty-second of an inch wide,” and in the tissues beneath the skin of the neck “were two thread-like, round worms of a pale pinkish tint and about three-fourths of an inch in length.” Of this wonderful bird we may truthfully say with Mr. Langille, “Whether one notes his strong flight, his elastic bounding and springing along the trunks of the trees, the effective chiseling of his powerful bill, or his sonorous cackling, one is particularly impressed with the spirit and immense energy of the bird.” SABBATH BY THE LAKE.