[X] The Development of English Thought. A Study in the Economic Interpretation of History. By Simon N. Patten, Ph. D. New York: The Macmillan Company. 1899. $3.
[Y] Nature Study for Grammar Grades. A Manual for the Guidance of Pupils below the High School in the Study of Nature. By Wilbur S. Jackman. Danville, Ill.: The Illinois Printing Company. Pp. 407.
[Z] Fertilizers. The Source, Character, and Composition of Natural, Home-made, and Manufactured Fertilizers; and Suggestions as to their Use for Different Crops and Conditions. By Edward B. Voorhees. New York: The Macmillan Company. Pp. 335. Price, $1.
[AA] Commercial Organic Analysis. A Treatise on the Properties, Proximate Analytical Examination, and Mode of Assaying the Various Organic Chemicals and Products employed in the Arts, Manufactures, and Medicine. By Alfred H. Allen. Third edition. Illustrated. With Revisions and Appendix by the author and Henry Leffmann. Vol. I. Introduction. Alcohols, Neutral Alcoholic Derivatives, Sugars, Starch and its Isomers, Vegetable Acids, etc. Philadelphia: P. Blakiston, Sons & Co. Pp. 557. Price, $4.50.
The same work. Second edition. Revised and enlarged. Proteids and Albuminous Principles, Proteids or Albuminoids. Same publishers. Pp. 584. Price, $4.50.
[AB] The Porto Rico of To-day. Pen Pictures of the People and the Country. By Albert Gardner Robinson. New York: Charles Scribner's Sons. Pp. 240, with maps. Price, $1.50.
[AC] The Principles of Biology. By Herbert Spencer. In Two Volumes. Vol. I. Revised and enlarged edition. New York: D. Appleton and Company. Pp. 706. Price, $2.
[AD] Matter, Energy, Force, and Work. A Plain Presentation of Fundamental Physical Concepts, and of the Vortex-Atom and other Theories. By Silas W. Holman. New York: The Macmillan Company. Pp. 257. Price, $2.50.