An important critical study of the value of feeding experiments, conducted in captivity, as a method of determining normal food habits. The method is strongly condemned. Valuable series of references. NEUMAYER, G. VON. 1906. Anleitung zu Wissenschaftlichen Beobachtungen auf Reisen. Dritte Auflage, Bd. 1, pp. 842; Bd. 2, pp. 880. Hanover. A very important work, particularly for the traveling naturalist. Chapters by specialists, valuable references on collecting natural history specimens, and other phases of scientific exploration. PEARL, R. 1911. Biometric Ideas and Methods in Biology; their Significance and Limitations. Scientia, Vol. X, pp. 101-119. PETERSEN, C. G. JOH., and JENSEN, P. B. 1911. Valuation of the Sea. 1. Animal Life of the Sea-Bottom, its Food and Quantity. Rep. of the Danish Biol. Sta. to the Board of Agriculture, Vol. XX. pp. 76. Translated from Fiskeri-Beretning for 1910. Copenhagen. Methods and results of a quantitative study of animals on the sea-bottom. A very important paper. Descriptions and figures of the apparatus used. REIGHARD, J. 1908. Methods of Studying the Habits of Fishes, with an Account of the Breeding Habits of the Horned Dace. U. S. Bur. of Fisheries Bull., Vol. XXVIII, pp. 1111-1136. 1908. The Photography of Aquatic Animals in their Natural Environment. Bull. U. S. Bur. of Fisheries, Vol. XXVIII, pp. 41-68. These papers also contain references to others on the habits of fishes. KING, L. A. L., and RUSSELL, E. S. 1909. A Method for the Study of the Animal Ecology of the Shore. Proc. Roy. Phys. Soc. of Edinburgh, Vol. XVII, No. 6, pp. 225-253. SANDERSON, E. D. 1904. A Card-Index System for Entomological Records. U. S. Dept. Agr., Div. Ent., Bull. 46, pp. 26-34. Contains references to other methods of recording notes. SIMPSON, C. B. 1903. Photographing Nets of Hydropsyche. Proc. Ent. Soc. Wash., Vol. V, pp. 93-95. SUMNER, F. B. 1910. An Intensive Study of the Fauna and Flora of a Restricted Area of the Sea Bottom. Bull. U. S. Bur. of Fisheries, Vol. XXVIII, pp. 1225-1263. A study on our coast along lines similar to those of C. G. J. Petersen’s “Det Videnskabelige Udbytte af Kanonbaaden ‘Hauchs’ Togter I de Danske Have Indenfor Skagen I Aarene” 1883-1886. 1893. pp. 464. Atlas. Copenhagen. TRANSEAU, E. N. 1908. The Relation of Plant Societies to Evaporation. Bot. Gaz., Vol. XLV, pp. 217-231. Methods of studying the relative humidity of the air in various plant associations, also applicable to certain studies of animals. WAINWRIGHT, D. B. 1905. A Plane Table Manual. Department of Commerce and Labor, Report U. S. Coast and Geodetic Survey for 1905. Appendix No. 7, pp. 295-341. In making local studies the plane table may be very helpful. WRIGHT, A. H. 1907. A Graphic Method of Correlating Fish Environment and Distribution. Amer. Nat., Vol. XLI, pp. 351-354. WILSON, H. M. 1905. Topographical Surveying. Second Edition. New York.