So many subjects came before the Congress that we cannot hope to do more than mention the titles of a few of them. Mr. Sylvester D. Judd discussed the question of "Protective Adaptations of insects from an Ornithological Point of View;" Mr. William C. Rives talked of "Summer Birds of the West Virginia Spruce Belt;" Mr. John N. Clark read a paper entitled "Ten Days among the Birds of Northern New Hampshire;" Harry C. Oberholser talked extemporaneously of "Liberian Birds," and in a most entertaining and instructive manner, every word he said being worthy of large print and liberal embellishment; Mr. J. A. Allen, editor of _The Auk_, said a great deal that was new and instructive about the "Origin of Bird Migration;" Mr. O. Widmann read an interesting paper on "The Great Roosts on Gabberet Island, opposite North St. Louis;" J. Harris Reed presented a paper on "The Terns of Gull Island, New York;" A. W. Anthony read of "The Petrels of Southern California," and Mr. George H. Mackay talked interestingly of "The Terns of Penikese Island, Mass." There were other papers of interest and value. "A Naturalist's Expedition to East Africa," by D. G. Elliot, was, however, the _piece de resistance_ of the Congress. The lecture was delivered in the lecture hall of the Museum, on Wednesday at 8 p. m. It was illustrated by stereopticon views, and in the most remarkable manner. The pictures were thrown upon an immense canvas, were marvellously realistic, and were so much admired by the great audience, which overflowed the large lecture hall, that the word demonstrative does not describe their enthusiasm. But the lecture! Description, experience, suffering, adventure, courage, torrid heat, wild beasts, poisonous insects, venomous serpents, half-civilized peoples, thirst,--almost enough of torture to justify the use of Coleridge's Ancient Mariner in illustration,--and yet a perpetual, quiet, rollicking, jubilant humor, all-pervading, and, at the close, on the lecturer's return once more to the beginning of civilization, the eloquent picture of the Cross, "full high advanced," all combined, made this lecture, to us, one of the very few platform addresses entirely worthy of the significance of unfading portraiture. --C. C. MARBLE. [Illustration: From col. Chi. Acad. Sciences. MOUNTAIN BLUE BIRD. Copyrighted by Nature Study Pub. Co., 1897, Chicago.] THE MOUNTAIN BLUEBIRD.