United States Commission of Fish and Fisheries. Bulletin No. 409. List of Fishes known to inhabit the Waters of the District of Columbia and Vicinity. By H. M. Smith and B. A. Bean Pp. 80; No. 410. Notes on a Collection of Tide-Pool Fishes from Kadiak Island, Alaska. By C. M. Rutter. Pp. 4; No. 411. The Southern Spring Mackerel Fishery of the United States. By Hugh M. Smith. Pp. 80; No. 412. Notice of Filefish New to the Fauna of the United States. By H. M. Smith. Pp. 8; No. 413. The Pearly Fresh-Water Mussels of the United States. By Charles T. Simpson. Pp. 10; No. 414. The Mussel Fishery and Pearl-Button Industry of the Mississippi River. By H. M. Smith. Pp. 24; No. 415. The Peripheral Nervous System of the Bony Fishes. By C. J. Herrick. Pp. 6; No. 416. The Reappearance of the Tilefish. By H. C. Bumpus. Pp. 12; No. 423. A Review of the Fisheries in the Contiguous Waters of the State of Washington and British Columbia. By Richard Rathbun. Pp. 96, with plates. United States Geological Survey. Nineteenth Annual Report. Part II. Papers, chiefly of a Theoretic Nature. Pp. 958; Principles and Conditions of the Movements of Ground Water. By F. H. King. With a Theoretical Investigation of the Motion of Ground Waters. By C. S. Richter. Pp. 384. Wiechmann, F. G. Chemistry, its Evolution and Achievements. New York: W. R. Jenkins. Pp. 176. Transcribers’ Notes Punctuation, hyphenation, and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed. Simple typographical errors were corrected; occasional unbalanced quotation marks retained. Ambiguous hyphens at the ends of lines were retained. Page 315: The illustration’s caption, describing line thickness, was printed as actual lines, but has been changed to words by the Transcriber. Page 329: “_cito tuto_” may be two separate terms that should be separated with a comma. Page 339: “_cortége_” was printed with an acute accent. Page 352: Unmatched right-parenthesis removed after “p. 429.” End of the Project Gutenberg EBook of Appletons' Popular Science Monthly, January 1900, by Various