THE American Naturalist has changed its form this year. In future it is to be published by Messrs. H. O. Houghton and Co., Cambridge, Mass., under the editorship of Dr. A. S. Packard, jun. The amount of matter is increased, and the articles will be of a more popular nature than previously. A department of Geography and Travel is added, and Dr. R. H. Ward, of Troy, N.Y., will superintend the Microscopy. There seems to be considerable difficulty in the production of a science journal in America, and we think that there is still room for improvement. The first paper in the January number is on “Burs in the Borage family,” by Prof. Asa Gray, in which a new form, named Harfagonella, is described, having been obtained by Dr. E. Palmer, from Guadalupe Island, off Lower California.—The Rev. S. Lockwood describes the habits of the “Florida Chameleon” (Anolis principalis).—Mr. David Scott writes on the proper specific name of the Song Sparrow, Mclospiza fasaata (Gondin), not M. mdodia (Wilson).—Mr. J. C. Russell shows of what great value the New Zealand Flax (Phormium tenax) would be if a method of cleaning it could be discovered.—Mr. J. A. Alien discusses the availability of certain Bartramian names in ornithology, and opposing Dr. Coues' desire to establish some of them. A list is given of those of Bartram's names which Dr. Coues wishes to re-establish.—Prof. N. S. Shaler describes the first session of the Harvard Summer School of Geology.—Ancient ruins in S. W. Colorado are illustrated and described from photographs taken by Mr. W. H. Jackson, the photographer to Prof. Hayden's United States Geological Survey of the Territories, including a house, a round tower, and a square one of Indian construction.—Reviews of Sach's “Botany” (English translation) and Caton's “Summer in Norway,” with badlyengraved drawings, are given, together with notes, &c., which conclude the number.