494 



SCIENCE. 



[JS. S. Vol. XIV. No. 352. 



E. Dwight Sanderson, Entomologist, Agr. Expi 

 Sta., Newark, Del. 



W. M. Scott, State Entomologist, Atlanta, Ga. 



James F. Sellers, Professor of Chemistry, Mercer 

 University, Macon, Ga. 



Gustavus Sessinghaus, Mining Engineer, Alma, 

 Colo. 



Homer LeRoy Shantz, Instructor in Biology, Col- 

 jrado College, Colorado Springs, Colo. 



John C. Shedd, Professor of Physics, Colorado 

 College, Colorado Springs, Colo. 



James D. Skinner, 823 E. 14th Ave., Denver, Colo. 



H. Clyde Snook, Professor of Physics and Chem- 

 istry, Allegheny College, Meadville, Pa. 



Nathaniel M. Snyder, Electrical Engineer, Gering, 

 Neb. 



Zachariah X. Snyder, President State Normal 

 School, Greeley, Colo. 



Elmer G. Starr, M.D., Clinical Professor Ophthal- 

 mology, University of Buffalo, 523 Delaware Ave., 

 Buffalo, N. Y. 



Thomas B. Stearns, Mining and Mechanical Engi- 

 neer, Denver, Colo. 



Eobert Stevenson, Consulting, Civil and Mining 

 Engineer, P. O. Box 2214, San Francisco, Cal. 



James H. Stewart, Director W. Va. Agr. Exp. Sta., 

 Morgantown, W. Va. 



George A. Still, Student, Drake University, 1428 

 Locust St., Des Moines, Iowa. 



Miss Lela Lorena Stingley, Astronomical Student, 

 University Park, Colo. 



Goodwin D. Swezey, Professor of Astronomy and 

 Meteorology, University ofjNebraska, Lincoln, Nebr. 



Harry Stanley Thayer, Chemist, Greeley, Colo. 



Miss Mary Clark Trayler, Astronomical Student, 

 653 S. Grant Ave. , Denver, Colo. 



George B. Upton, Milton, Mass. 



Eudolph J. Walter, Mining Engineer and Metal- 

 lurgist, 1452 Blake St., Denver, Colo. 



C. E. Wantland, Land Agent, Union Pacific R. R. 

 Co., 1025 17th St., Denver, Colo. 



Milan L. Ward, Professor Mathematics and As- 

 tronomy, Ottawa University, Ottawa, Kan. 



David Wesson, Mgr. and Treas. of Wesson Process 

 Co., 204 Bay St., Savannah, Ga. 



Rev. Henry White Warren, Bishop M. E. Church, 

 University Park, Colo. 



Thomas B. Whitted, Electrical Engineer, General 

 Elec. Co., Denver, Colo. 



Merle J. Wightman, Electrical Engineer, 150 

 Nassau St., New York, N. Y. 



Edwin M. Wilcox, Botanist and Entomologist, 

 A. and M. College, Stillwater, Oklahoma. 



Arthur Williams, with N. Y. Edison Co., 261 Lin- 

 den Boulevard, Brooklyn, N. Y. 



Wm. H. Wilson, Professor of Mathematics, Uni- 

 versity of Wooster, 141 Beall Ave., Wooster, Ohio. 



Alexander N. Winchell, Professor of Geology, Mon- 

 tana School of Mines, Butte, Montana. 



Byron C. Wolverton, Engineer, New York and 

 Pennsylvania Telephone and Telegraph Company, 

 P. O. Box 43, Elmira, N. Y. 



William S. Yeates, State Geologist, Atlanta, Ga. 



SCIENTIFIC BOOKS. ^ "^ 



A Laboratory Course in Plant Physiology^ espe^ 

 daily as a basis for ecology. By William F. 

 Ganong, Ph.D., Professor of Botany in 

 Smith College. New York, Henry Holt and 

 Company. 1901. Octavo, cloth. Pp. vi -f- \ 

 147. y(/' 



Practical Text-book of Plant Physiology. By,/ 

 Daniel Trembly MacDougal, Ph.D., Di- 

 rector of the Laboratories of the New York 

 Botanical Garden. With one hundred and 

 fifty illustrations. New York, Longmans, 

 Green and Co. 1901. Octavo, cloth. Pp. 

 xiv + 352. 



Professor Ganong's little book is a product of 

 his laboratory, and therefore has the merit of 

 practicality. The illustrations of apparatus 

 (about thirty) are from photographs of the ap- 

 pliances actually used, and the text consists of . 

 descriptions of experiments which the author 

 has repeatedly made. The book is in two parts, 

 in the first of which the author discusses 

 methods of study and the necessary equipment, 

 while in the second is given an outline of a 

 course of experiments in the laboratory on 

 protoplasm, nutrition, growth, reproduction 

 and irritability. The author says (p. 23), ' It 

 goes without saying that a greenhouse and a 

 laboratory are indispensable for a course in 

 physiology,' and naturally gives a good deal 

 of attention to the plans and equipment of both. 

 These sections of the book will prove very 

 helpful to those who are building up their 

 facilities for physiological work. The experi- 

 ments, of which nearly one hundred are specif- 

 ically indicated, are selected with reference to 

 their availability and practicability in an ele- 

 mentary course. The treatment here is such 

 as to make investigators. The author does not 

 ask numberless leading questions of the ' kin- 

 dergarten order,' nor does he leave the student 

 without any guide, but wisely follows a middle 



