Makch 9, 1900.] 



SCIENCE. 



395 



Moore, Ernest William Brown, Thomas Scott 

 Fiske; New York, The Macmillan Company. 

 The Transactions, which is devoted to the pub- 

 licatioa of important researches presented at 

 the meetings of the Society, is quarto in size, 

 and the annual volume will contain not less 

 than five hundred pages. The contents of the 

 first number are noted elsewhere. 



The Annual Register of the Society has re- 

 cently been issued, and contains a directory list 

 of publications, list of officers and members, 

 Consitution and By-Laws, and annual reports. 

 Copies may be obtained from the Secretary. 



A regular meeting of the Society was held 

 at Columbia University on Saturday, February 

 24, 1900. As usual, the programme occupied a 

 morning and an afternoon session. President 

 K. S. Woodward occupied the chair. A part 

 of the afternoon was devoted to a joint meet- 

 ing with American Physical Society, at which a 

 paper on Latitude Variation was presented by 

 Professor J. K. Rees. 



A revision of the By-Laws, affecting mainly 

 their arrangement, was adopted. Notice was 

 also given of a proposed amendment of the 

 Constitution enlarging the Council by making 

 the ex-presidents permanent members and in- 

 creasing the number of elected members by 

 three. The following persons were elected to 

 membership in the Society : Professor Anne 

 L. Bosworth, Rhode Island College, Kingston, 

 R. I.; Mr. H. L. Coar, University of Illinois, 

 Urbana, 111.; Dr. F. R. Moulton, University of 

 Chicago, Chicago, 111.; Mr. F. G. Radelfinger, 

 Hydrographic OflBce, Washington, D. C. Two 

 applications for membership were received. 



The following papers were presented at this 

 meeting: 



(1) Dr. Alexander Macfaelane: 'Onthenabla 

 of quatprnions. ' 



(2) Dr. M. B. Porter: ' On the number of roots 

 ot F (a, /3, y, x) between zero and 1.' 



(3) Me. H. W. Kuhn: 'List of the imprimitive 

 groups of degree fifteen.' 



(4) De. G. a. Milleu: 'On the groups of isomor- 

 phisms.' 



(5) De. J. I. Huchinson: 'The Hessian of the 

 cubic surface, II.' 



(6) Peofessor Maxims Bochke: ' Some theorems 



concerning linear differential equations of the 

 second order.' 



(7) Professor J. K. Eees: 'Results of seven 

 years' observations for variation of latitude and 

 the constant of aberration, made at the Columbia 

 University Observatory.' 



(8) Dr. G. W. Hill : ' On the extension of De- 

 launay's method in the lunar theory to the 

 general problem of planetary motion.' 



(9) Professoe E. B. Van Vleck: 'On linear 

 criteria for determining the circle of converg- 

 ence of a power series.' 



(10) Professor F. Morley : 'The metrical geom- 

 etry of the plane re-line. ' 



(11) Professor L. E. Dk.'KSOn: 'Two triply in- 

 finite systems of non-isomorphic simple groups 

 of equal order.' 



(12) Professoe L. E. Dickson: 'Isomorphism be- 

 tween certain systems of simple linear groups.' 



(13) Dr. L. W. Reid: 'A table of class numbers 

 for cubic number bodies with the method of 

 their calculation.' 



After the meeting many of the members 

 dined and passed a pleasant evening together. 

 The next meeting of the Society will be held 

 on Saturday, April 28th. The Chicago Section 

 meets at Northwestern University, Evanston, 

 111., on Saturday, April 14th. The summer 

 meeting of the Society will be held in New 

 York, in June, in affiliation with the meeting of 

 the American Association for the Advancement 

 of Science. F. N. Cole, 



Secretary. 



Columbia University. 



the texas academy of science. 



The regular monthly meeting of the Texas 

 Academy of Science was held in the Chemical 

 lecture room of the University of Texas on Fri- 

 day evening, January 12th, President Simonds 

 in the chair. 



The first paper on the program, entitled, 'The 

 Red Sandstone of the Diablo Mountain, Texas,' 

 was by Mr. E. T. Dumble, of Houston, formerly 

 State Geologist. The sandstone here discussed 

 is found north of Allamore station on the Texas 

 and Pacific Railway, and is the rock enclosing 

 the copper vein, a part of which has been 

 known for some years as the Hazel mine. Pro- 

 fessor Streeruwitz in one of his reports on the 

 region states that this formation is possibly De- 

 vonian, basing his statement, as Mr. Dumble 



