54 



SCIENCE. 



[X. S. Vol. XVIII. Xo. 445. 



attempt being- made to discuss the vast array 

 of species in the Micro-lepidoptera. 



The book is divided into two parts, the first 

 fifty-six pages being devoted to the six chap- 

 ters of Part I. In these chapters general di- 

 rections for collecting, studying and rearing 

 caterpillars are given — directions of great 

 value to the beginner and of decided sugges- 

 tiveness to the experienced entomologist. The 

 remaining eleven chapters are devoted to the 

 biographies of many species of Sphingidse, 

 ArctiidsB, Saturniidse, Ceratocampidse, Lima- 

 codidaj, Notodontidse and Noctuidee. These 

 life histories are written in simple, lucid 

 English, each insect being described in its 

 progress from the egg to the adult in a way 

 that any one can understand. The useful- 

 ness of the book is greatly increased by the 

 admirable illustrations from photographs of 

 living caterpillars and spread moths by Miss 

 Edith Eliot. These are certainly among the 

 best photographs of living insects that have 

 been published. 



The authors and the illustrator are to be 

 congratulated on having prepared a book 

 which will be of use not only to entomologists, 

 but also to great numbers of teachers and 

 pupils interested in nature study in the 

 schools. Clarence M. Weed. 



SCIENTIFIC JOURNALS AND ARTICLES. 

 The June ntunber (volume 9, number 9) 

 of the Bulletin of the American Mathematical 

 Society contains the following articles : ' Sin- 

 gular Points of Eunctions which Satisfy Par- 

 tial Differential Equations of the Elliptic 

 Type,' by M. Bocher ; ' Errata in Gauss's 

 Tafel der Anzahl der Classen binarer quad- 

 ratischer Eormen,' by A. M. Nash (communi- 

 cated by E. B. Elliott) ; ' The Logarithm as 

 a Direct Function,' by E. McClintock; review 

 of Klein-Fricke's ' Automorphic Functions,' 

 by J. I. Hutchinson ; review of Loria's ' Spe- 

 cial Plane Curves,' by E. B. Wilson ; ' Shorter 

 Notices ' ; ' Notes ' ; ' New Publications.' The 

 July number of the Bulletin contains : Re- 

 ports of the April meeting and sectional 

 meetings of the society ; ' A Fundamental 

 Theorem with Respect to Transitive Substi- 



tution Groups,' by G. A. Miller; 'The Char- 

 acterization of CoUineations,' by E. Kasner; 

 review of Goursat's ' Cour d' Analyse,' by W. 

 F. Osgood ; ' Shorter Notices ' ; ' Notes,' and 

 ' New Publications ' ; ' Twelfth Annual List 

 of Published Papers ' and index of volume 9. 



The July number (volume -1, number 3) 

 of the Transactions of the American Mathe- 

 matical Society contains: 'On the Point-Line 

 as Element of Space: A Study of the Cor- 

 responding Bilinear Connex,' by E. Kasner; 

 ' On the Formation of the Derivatives of the 

 Lunar Coordinates with Respect to the Ele- 

 ments,' by E. W. Brown ; ' On Reducible 

 Groups,' by S. Epsteen ; ' Theory of Linear 

 Associative Algebra,' by J. B. Shaw ; ' Pro- 

 jective Coordinates,' by F. Morley ; ' On an 

 Extension of the 1894 Memoir of Stieltjes,' 

 by E. B. Van Vleck ; ' On the "Variation of 

 the Arbitrary and Given Constants in Dy- 

 namical Equations,' by E. W. Brovm ; ' The 

 Primitive Groups of Class 2p which Contain 

 a Substitution of Order p and degree 2p,' 

 by W. A. Manning; 'Complete Sets of Pos- 

 tulates for the Theory of Real Quantities,' 

 by E. V. Huntington. 



The University of Chicago will begin the 

 publication on January 1 of a journal of 

 infectious diseases, edited by Professors Lud- 

 wig Hektoen and E. O. Jordan. It is said 

 that the journal will be endowed with $125,- 

 000 by Mr. and Mrs. Arnold F. McCormick. 



SOCIETIES AND ACADEMIES. 



THE UNIVEHSITY OF CHICAGO MEDICAL CLUB. 



The University of Chicago Medical Club, 

 organized October, 1901, began its second 

 season with a special meeting on December 1, 

 1902, at which Professor G. N. Stewart, who 

 has succeeded Professor Loeb in the chair of 

 physiology at the university, presented an in- 

 teresting paper on ' Problems and Methods of 

 Modern Physiology.' 



On January 19, 1903, the club held its first 

 regular meeting for the season, electing as 

 officers for the year, Lewellys F. Barker, presi- 

 dent, and Frank R. Lillie, secretary. 



Meetings of the club were held through the 

 winter and spring, as usual, once a fortnight. 



