494 



SCIENCE. 



[N. S. Vol. XXII. No. 564. 



confines his descriptions to that form with the 

 exception of a particular quadrant already 

 referred to. 



The fourth chapter treats of the methods 

 which can be used most advantageously for 

 determining time, latitude, longitude and 

 azimuth. 



The appendix, which, as already stated, gives 

 attention to geographic determinations in the 

 air, contains also a description with illustra- 

 tive examples, of. methods for determining 

 time, latitude and azimuth without the use 

 of graduated circles, methods for the appli- 

 cation of which only a watch and a spool of 

 thread are necessary auxiliaries. 



The reader will be attracted by the beautiful 

 typography and the excellence of the illustra- 

 tions which enhance the value of the book. 



O. H. T. 



SCIENTIFIC JOURNALS AND ARTICLES. 



The opening (October) number of volume 

 12 of the Bulletin of the American Mathe- 

 matical "Society contains the following articles : 

 ' The Elementary Treatment of Conies by 

 Means of the Regulus,' by Charlotte Angas 

 Scott ; ' Arzela's Condition for the Continuity 

 of a Function Defined by a Series of Con- 

 tinuous Functions,' by E. J. Townsend; 

 ' Galois Field Tables for p^^ 169,' by W. H. 

 Bussey; Notes; ISTew Publications. 



The November number of the Bulletin 

 contains : ' Report of the Twelfth Sum- 

 mer Meeting of the American Mathematical 

 Society,' by F. N. Cole; 'A Set of Gen- 

 erators for Ternary Linear Groups,' by Ida 

 May Schottenfels; 'Note on the Structure 

 of Hypercomplex Number Systems,' by Saul 

 Epsteen ; ' A Geometric Property of the Tra- 

 jectories of Dynamics,' by Edward Kasner; 

 ' On the Possible Numbers of Operators of 

 Order 2 in a Group of Order 2«^' by G. A. 

 Miller ; ' On the Arithmetic Nature of the 

 Coefiicients in Groups of Finite Monomial 

 Linear Substittitions,' by W. A. Manning; 'A 

 Modern Calculus of Variations ' (Review of 

 Bolza's Lectures on the Calculus of Varia- 

 tions), by E. R. Hedrick; 'Two Books on 

 Analytic Geometry ' (Review of Smith and 

 Gale's Elements of Analytic Geometry and In- 



troduction to Analytic Geometry), by O. D. 

 Kellogg; Notes; New Publications. 



The American Naturalist for September 

 contains the following articles : ' Interrelation- 

 ships of the Sporozoa,' by Howard Crawley, 

 which opens with an excellent statement of the 

 lines along which these animals have devel- 

 oped, and concludes that the term sporozoa 

 should be used as a temporary and convenient 

 cloak to cover certain protozoa. A ' Contribu- 

 tion to Our -Knowledge of the Myxinoids,' by 

 Julia Worthington, contains a large amount 

 of interesting information, based on the Cali- 

 fornian Bdellostoma domheyi, concerning 

 these little-known ' fishes.' F. C. Baker con- 

 tributes ' Notes on the Genitalia of Lymnea.' 



■ Bird Lore for September-October has three 

 excellent illustrated papers, telling how to at- 

 tract and preserve the winter birds. ' Our Avian 

 Creditors,' by Ernest H. Baynes ; ' The Winter 

 Feeding of Birds,' by Mabel Osgood Wright, 

 and ' How to Attract the Winter Birds,' by 

 Edward H. Forbush. W. W. Cooke presents 

 the twelfth paper on ' The Migration of War- 

 blers ' and there are ' Notes on Winter Feed- 

 ing ' by a number of contributors. Under the 

 Audubon Societies is an appeal for funds for 

 the widow of Game Warden Bradley and for 

 the prosecution of his murderer, which it is 

 hoped may meet with a ready response. 



The Museums Journal of Great Britain has 

 , a frontispiece and brief article on the Cen- 

 tral Section of the Museum of the Brooklyn 

 Institute and an account of ' A Papier-rfiiache 

 Model of the Monk-fish.' The appointment of 

 A. B. Skinner as director of the Albert and 

 Victoria Museum is announced, he taking the 

 place vacated by Sir C. Purdon Clarke. Mr. 

 George Murray has resigned his position of 

 keeper of the department of botany in the Brit- 

 ish Museum, a place he has held for the last 

 ten years. 



Three good papers appear as separates from 

 the report of the Commissioner of Fisheries 

 for 1903-1904: 'A Revision of the Cave 

 Fishes of North America,' by Ulysses O. Cox; 

 ' The Life History of the Blue Crab,' by W. P. 

 Hay, and ' The Crab Industry of Maryland,' 

 by Winthrop A. Roberts. 



