April 18, 19U2.J 



SCIENCE. 



625 



arations. It has been well translated by Dr. 

 Schober, and is clearly illustrated. 



E. Renouf. 



Laboratory Exercises in General Chemistry. 

 Compiled from various sources by G. W. 

 Shaw, A.M., formerly Professor of Chemis- 

 try at Oregon State Agricultural College. 

 For use in connection with Storer and 

 Lindsay's 'Manual of Chemistry.' New 

 York, American Book Company. Pp. 63. 

 This book is better than most of its class. 

 A generally valid objection to the use of lab- 

 oratory books instead of the text-book is that 

 they enable a student to perform an experi- 

 ment without thought of the principle which 

 it illustrates. Such objection cannot be made 

 to this book, for each exercise contains many 

 questions requiring verbal answer to the in- 

 structor or written answer in the laboratory 

 note-book. 



E. Eenouf. 



The Elements of Qualitative Analysis. By 

 Wm. a. Noyes, Ph.D., Professor of Chemis- 

 try in "the Rose Polytechnic Institute. 

 Fifth edition, revised. New York, Henry 

 Holt & Company. 1901. Pp. 101. 

 In this new edition of his excellent and 

 " well-known manual. Professor Noyes intro- 

 duces and expands the method of Abegg and 

 llerz for the systematic detection of acids. 

 He divides the acids into eight groups, using 

 as reagent for group 1 concentrated sulphuric 

 acid; for groups 2, 3 and .4 calcium chloride, 

 barium chloride and zinc chloride respectively 

 in neutral solution ; for group 5, color reaction 

 with ferric chloride; group 6, silver nitrate; 

 group 7 contains the acids whose calcium, 

 barium, zinc and silver salts are soluble; and 

 group 8, the commoner organic acids which 

 carbonize on heating. This method seems 

 simple and little open to error. 



E. Renouf. 



SOCIETIES AND ACADEMIES. 



THE CHICAGO SECTION OF THE AMERICAN 

 MATHEMATICAL SOCIETY. 



The eleventh reg-ular semi-annual meeting 

 of the Section was held at the University of 

 Chicago, on Saturday, March 29, the first ses- 



sion opening at 10 o'clock a.m. At the 

 morning session Professor Townsend, of the 

 University of Illinois, and at the afternoon 

 session Professor Moore, President of the So- 

 ciety, occupied the chair. The following- 

 papers were read: 



Morning Session. 



Naelitrag zuni Artikel : ' Zvir Eikliiiuiig der 

 Bogenlange,' ii. s. w.: Professor 0. Stoltz, Inns- 

 bruck, Austria. 



' Tlie Mutual Independence of liilbert's Axioms 

 within the Various Groups ' : Mr. Arthur T. 

 Bell, University of Illinois. 



' Oh the Superosculation of Surfaces ' : Profess- 

 or H. Maschke, University of Cliicago. 



'A Certain Conic connected with the Isotomic 

 Relation ' : Professor Laenas G. Weld, University 

 of Iowa. 



' Concerning the Second Variation in the 

 Isoperimetric Problem ' : Pi-of essor 0. BoLZ.\, 

 University of Chicago. 



' Concerning the Isoperimetiic P)-oblem on a 

 Given Surface': Professor Bolza. 



Afternoon Session. 



' Some Remarkable Cases of Libration among 

 the Small Planets of the Hilda Type ' : Professor 

 Kurt Laves, University of Chicago. 



' On the Interchange of the Order of DifTerentia- 

 tion': Professor E. J. Tow.xsesd, University of 

 Illinois. 



' On the Group Defined for Any Given Field by 

 the Multiplication Table of Any Given Finite 

 Group ' : Professor L. E. DiCKSOX, University of 

 Chicago. 



■■ Theorems on the Residues of Multinomial 

 Coefficients with respect to a Prime Modulus ' : 

 Professor Dickson. 



The committee appointed at the last meet- 

 ing of the Section to consider and report a 

 scheme of equivalent requirements for the 

 Master's degree, for candidates making mathe- 

 matics their major subject, presented a 

 preliminary report which was discussed and 

 ordered to be manifolded for distribution 

 among the members of the Society. The re- 

 port is in the hands of the secretary of the 

 Section and a copy will be sent to anj' mem- 

 bers applying for it. 



Thomas F. Holgate, 

 Secretary for the Section. 



