August 11, 1905.] 



SCIENCE. 



177 



Rio Grande and the gulf coast are regarded 

 as the edge of a zoological chasm, which dare 

 not be crossed except by the numerous Mex- 

 ican and West Indian species which are dis- 

 covered every year in Texas and Florida. 



The references to strictly anatomical and 

 biological papers are also most useful, repre- 

 senting a phase of the subject which is usually 

 entirely crowded out in an essentially taxo- 

 nomic catalogue. If future cataloguers of 

 other groups would profit by this example they 

 could gi'eatly enhance the value of their work 

 without an expenditure of much extra space 

 and labor. 



The special references under many of the 

 families and separate genera to special papers 

 relating to such groups will f)rove a great as- 

 sistance to the inexperienced worker as well as 

 a convenience to others more versed in the 

 scattered literature of the subject. 



The bibliography fills some 68 pages, in- 

 cluding all papers of any importance published 

 before January 1, 1904, while an appendix 

 covers the literature of 1904. 



As must be the case with any catalogue cov- 

 ering so large a group, a great number of 

 generic and specific names have been reduced 

 to synonymy since the last authoritative list. 

 These have been dealt with in an admirable 

 spirit of conservatism which contrasts sharply 

 with the extravagant overturning of names 

 often indulged in by insect cataloguers. To 

 quote the writer's own words : ' I have been in- 

 fiuenced by the feeling that my catalogue must 

 represent the actual condition of classification, 

 not merely my own views.' 



It is to be hoped that the catalogue will 

 stimulate the increasing interest in this group. 

 It will certainly be a great aid towards ac- 

 curate dipterological work in this count;ry. 

 Charles T. Brues. 



Public Musel^m, Milwaukee, Wis. 



SCIENTIFIC J0URXAL8 AND ARTICLES. 



The June number (volume 11, number 9) 

 of the Bulletin of the American Mathematical 

 Society contains : Report of the April meeting 

 of the Society, by F. N. Cole; Report of the 

 April meeting of the Chicago Section, by J. 

 W. Young; 'A general theorem on algebraic 



numbers,' by L. E. Dickson; ' On the deforma- 

 tion of surfaces of translation,' by L. P. Eisen- 

 hart ; ' The groups of order 2'"' which contain 

 an invariant cyclic subgroup of order 2"'~2^' 

 by G. A. Miller ; ' Galileo and the modern 

 concept of infinity,' by Edward Kasner; 

 ' Notes ' and ' ISTew Publications.' 



The July number contains : ' A survey of 

 the development of geometric methods,' by 

 M. Gaston Darboux, translated by H. D. 

 Thompson ; ' Note on Fermat's numbers,' by 

 J. C. Morehead; ' Simply transitive primitive 

 groups which are simple groups,' by H. L. 

 Rietz ; ' Remarks concerning the variation of 

 the length of a curve,' by T. J. Bromwich; 

 Review of Joly's Manual of Quaternions, by 

 J. B. Shaw; Shorter notices of Zeuthen's 

 Geschichte der Mathematik in XVI. und 

 XVII. Jahrhundert, by D. E. Smith, and of 

 Tannery's Introduction a la theorie des fonc- 

 tions d'une variable, by L. E. Dickson; 

 ' Notes ' and ' New Publications ' ; ' Fourteenth 

 annual list of papers read before the society 

 and subsequently loublished ' ; Index of vol- 

 ume 11. 



The July number (volume 6, number 3) 

 of the Transactions of the American Mathe- 

 matical Society contains the following ar- 

 ticles : 



H. PoiTs'CARE : ' Sur les lignes geodesiques des 

 surfaces Comdexes.' 



T. J. I'a. Bkomwich : ' The classification of 

 qiiadrics.' 



J. E. Wright: 'On differential invariants.' 



L. I. Neikirk: 'Groups of order p"», which con- 

 tain cyclic subgroups of order pm—z_i 



G. A. Miller : ' On the invariant subgroups of 

 prime index.' 



E. W. Browk : ' On a general method for treat- 

 ing motions and its application to indirect per- 

 turbations.' 



L. E. DiCKSOX : ' On hvpercomplex number sys- 

 tems.' 



J. H. Maclagax-Wedderburn : ' A theorem on 

 finite algebras.' 



J. RoYCE : ' The relation of the principles of 

 logic to the foundations of geometry.' 



J. PlERPOKT : ' On multiple integrals.' 



The American Naturalist for July contains 

 an article on the ' Restoration of the Titano- 



