692 



SCIENCE 



[N. S. Vol. XXXIV. No. 881 



it is unlikely that all horses in the locality 

 would be infested and as some flies even 

 though developing in manure from an infested 

 horse would probably escape infection. 



A more comprehensive discussion of Hahro- 

 nema, illustrated with figures, will be pub- 

 lished at a later date, probably as a bulletin of 

 the Bureau of Animal Industry. 



B. H. Kansom 

 BtiBEAD OF Animal Industry, 

 ■0. S. Depabtment op Agriculture, 

 Washington, D. C. 



SOCIETIES AND ACADEMIES 



the AMERICAN MATHEMATICAL SOCIETY 



The one hundred and fifty-fifth regular meeting 

 of the society was held at Columbia University on 

 Saturday, October 28. The attendance at the two 

 sessions was about forty, including thirty-five 

 members. President H. B. Fine occupied the 

 chair. The council announced the election of the 

 following persons to membership in the society: 

 Professor T. B. Ashcraft, Colby College; Professor 

 Clara L. Bacon, Goucher College; Professor J. M. 

 Davis, State University of Kentucky; Professor 

 W. C. Eells, Whitworth College; Dr. J. L. Jones, 

 Yale University; Professor F. C. Kent, University 

 of Oklahoma; Professor L. C. Plant, University 

 of Montana; Mr. B. E. Powers, Denver, Colo.; 

 Mr. T. M. Simpson, University of Wisconsin; 

 Professor Evan Thomas, University of Vermont; 

 Professor H. C. Wolff, University of Wisconsin; 

 Mr. W. A. Zehring, Purdue University. Nine 

 applications for membership were received. 



A list of nominations of officers and other mem- 

 bers of the council, to be placed on the ballot for 

 the annual election, was adopted. Provision was 

 made for committees to audit the treasurer's ac- 

 counts and to make arrangements for the summer 

 meeting to be held at the University of Pennsyl- 

 vania in 1912. The invitation of the University of 

 Wisconsin to hold the summer meeting and col- 

 loquium at that university in 1913 was accepted. 

 It was decided to change the form of the Annual 

 Register of the society by omitting all mention 

 under the personal entries of membership in other 

 organizations. A committee was appointed to con- 

 sider and report to the council a plan for placing 

 the business of the society on a permanent basis. 



The following papers were read at this meeting: 



A. E. Schweitzer: "On a functional equation." 



E. V. Huntington : "A new approach to the 

 theory of relativity. ' ' 



L. P. Siceloff : "Simple groups from order 2,001 

 to order 3,640." 



H. H. Mitchell : ' ' Determination of the quater- 

 nary linear groups by geometrical methods." 



G. A. Bliss: "A new proof of the existence 

 theorem for implicit functions. ' ' 



E. E. Powers: "The tenth perfect number." 



E. W. Brown: "On the summation of a certain 

 triply infinite series. ' ' 



L. L. Dines: "On the highest common factor of 

 a system of polynomials. ' ' 



E. D. Carmichael: "A generalization of 

 Cauchy's functional equation." 



E. D. Carmichael: "Fundamental properties of 

 a reduced residue system mod n. ' ' 



E. D. Carmichael: "On composite numbers P 

 which satisfy the Fermat congruence o^-i = 

 1 mod P." 



Edward Kasner: "Differential invariants of 

 infinite order. ' ' 



B. H. Camp : ' ' Series of Laplace 's functions. ' ' 



N. J. Lennes: "A new proof that a Jordan 

 curve separates a plane. ' ' 



The San Francisco Section of the society also 

 met on October 28, at the University of California. 

 The Southwestern Section holds its fifth annual 

 meeting at Washington University on Saturday, 

 December 2. The annual meeting of the society 

 for the election of officers will be held at Columbia 

 University on December 27-28. The Chicago Sec- 

 tion will also meet in the Christmas holidays. 

 F. N. Cole, 

 Secretary 



THE AMERICAN PHILOSOPHICAL SOCIETY 



Factors affecting Changes in Body Weight: 



Francis G. Benedict. 



The normal human body is continually under- 

 going changes in weight, gradualUy losing weight 

 between meals, and increasing it when food is 

 taken. Very great losses incidental to excessive 

 muscular exercise are chiefly due to variations in 

 the water content of the body. By means of ex- 

 periments with the respiration calorimeter, it has 

 been shown that a change from a diet with a pre- 

 ponderance of carbohydrates to one with a pre- 

 ponderance of fat may cause a loss in weight 

 amounting to two pounds per diem for three days. 

 Experiments made with diabetics also show large 

 changes, chiefly due to the retention or the loss of 

 water. The gains or losses of body material, 

 chiefly fat, are especially emphasized. 



