336 



SCIENCE. 



[N. S. Vol. I. No. 12. 



mal stimuli and sensations, and Mr. Franz 

 gives an account of measurements of the 

 light which is just sufficient to produce an 

 after-image. In addition to discussion and 

 notes, there is an extended survey of recent 

 psychological literature prepared by Profs. 

 Sully, Ormond, FuUerton, Dewey, Baldwin, 

 Donaldson, Cattell, Angell, Gardiner and 

 Duncan, and Drs. Binet, Kirschmann, 

 Tracy and Noyes. 



THE POPULAR SCIENCE MONTHLY, MARCH. 



The number opens with an intei-esting 

 account of The Birth oj a Sicilian Volcano by 

 Prof. Packard, describing an ascent of 

 Monte Gernellaro, a crater on Mount Etna 

 formed in 1886. In the second paper Dr. 

 Bela Hubbard dwells on the importance of 

 the forests and the need of legislation to 

 prevent destruction by fire. An article by 

 Dr. S. Millington Miller discusses the edu- 

 cation of the blind and of the deaf and 

 dumb and their careers. The number in- 

 cludes articles on engraving and bookbind- 

 ing, two articles on scientific education, 

 and accounts of Tyndall's work and of 

 Thomas Nuttall (with a portrait) . 



THE ASTROPHTSIOAL JOURNAL, MARCH. 



Notes on the Atmospheric Bands in the Spectrum 



of Mars : William Huggins. 

 Recent Researches on the Spectra of the Planets : 



H. C. VOGEL. 



Solar Observations made at the Royal Observa- 

 tory of the Roman College in 189^ : P. 

 Tacchini. 



On a very large Protuberance Observed Decem- 

 ber H, 1894. ■• J- Fenyi. 



On the Distribution of the Stars and the Distance 

 of the Milky-Way in Aquila and Cygnus : 



■ C. Easton. 



Preliminary Table of Solar Spectrum Wave- 

 Lengths. III. : H. A. Eowland. 



The Modern Spectroscope: F. L. 0. Wads- 

 worth. 



Minor Contribidions and Notes ; Reviews ; Re- 

 cent Publications. 



bulletin of the AMERICAN MATHEMATICAL 

 SOCIETY, FEB. 



On a Certain Class of Canonical Forms :^ 

 Ralph A. Egberts. 



Hayivard's Vector Algebra : Maxime Bocher. 



Apolar Triangles on a Conic : F. Morley. 



An Instance Where a Well-knoivn Test to Prove 

 the Simplicity of a Simple Group is Insuffi- 

 cient : George S. Miller. 



Briefer Notices ; Notes; Neiv Publications. 



THE AMERICAN GEOLOGIST, MARCH. 



Development of the Corallum in Favosites forbesi, 

 var. occidentalis : George H. Giety. 



Early Protozoa: G. F. Matthew. 



The Stratigraphic Base of the Taconic or Low- 

 er Cambrian : N. H. Winchell. 



The Second Lake Algonquin : F. B. Taylor. 



Editorial Comment ; Review of Recent Geologi- 

 cal Literature; Correspondence; Personal 

 and Scientific News. 



NEW BOOKS. 



Guide to the Study of Common Plants . Volney 

 M. Spaldlng. Boston, D. C. Heath & Co. 

 1895. vii + 294. 



Government of the Colony of Soidh Carolina. 

 Edson L. Whitney. Baltimore, The 

 Johns Hopkins University Press. 1895. 

 Pp. 121. 75 cents. 



Theoretical Chemistry. W. Nernst. Trans- 

 lated by Charles Steele Palmer. London 

 and New York, Macmillan & Co. 1895. 

 Pp. xsv + 697. $5. 



Mechanics. Dynamics. E. S. Glazebrook. 

 Cambridge University Press. New York, 

 Macmillian & Co. 1895. Pp. xii + 251. 

 $1.25. 



Dia7-y of a joimiey through Mongolia and Tibet. 

 AViLLiAM WooDViLLE EocKHiLL. Wash- 

 ington, Smithsonian Institution. 1894. 

 Pp. XX + 413. 



Noxious and Beneficial Insects of the State of 

 Illinois. S. A. Forbes. Springfield, 111. 

 1894. Pp. xi + 165 + xii. 



