226 



SCIENCE. 



[N. S. Vol. VIII. No. 190. 



E. O. Lovett ; ' A Solution of the Biquadratic 

 by Binomial Eesolvents,' by Dr. G. P. Stark- 

 weather ; ' Note on Special Regular Reticula- 

 tions,' by Professor E. W. Davis ; 'Limitations 

 of Greek Arithmetic,' by Mr. H. E. Hawkes ; 

 ' Maxima and Minima of Functions of Several 

 Variables,' by Professor James Pierpont ; ' On 

 the Intersections of Plane Curves,' by Mr. F. S. 

 Macaulay ; ' Elliott's Algebra of Quantities,' 

 by Professor H. S. White ; ' Hadamard's Ge- 

 ometry,' by Professor F. Morley ; 'Further 

 Note on Euler's Use of i to Represent an 

 Imaginary,' by Professor W. W. Beman ; and 

 'Note on Napier's Rules of Circular Parts,' by 

 Professor E. O. Lovett. 



SOCIETIES AND ACADEMIES, 



THE AMERICAN ASSOCIATION FOE THE AD- 

 VANCEMENT OF SCIENCE. 



We have on frequent occasions during the 

 past year called attention to the preparations 

 for the anniversary meeting of the American 

 Association which takes place next week at 

 Boston. We now subjoin the programs of 

 the sections, to which undoubtedly important 

 additions will be made at the time of the 

 meeting. 



SECTION A. — MATHEMATICS AND ASTRONOMY. 



Address of the Vice-President: Development 

 of Astronomical Photography. By Professor 

 E. E. Barnard, Yerkes Observatory. 



1. Three Years' Experience in making As- 

 tronomy Popular. By Miss Mary Proctor, New 

 York City. 



2. Personal Equations during the Past Cen- 

 tury. By Professor Truman H. Safford, Wil- 

 liams College, Williamstown, Mass. 



3. Triangles whose Sides and Areas are ex- 

 pressed by Whole Numbers. By Professor 

 Truman H. Safford, Williams College. 



4. On Rational Right- Angled Triangles. By 

 Dr. Artemas Martin, U. S. Coast Survey, Wash- 

 ington, D. C. 



5. Behavior of the Atmospheres of Gas and 

 Vapor — Generating Globes in Celestial Space. 

 By Dr. J. Woodbridge Davis, Woodbridge 

 School, New York City. 



6. Graphical Logic. By Professor Ellen 

 Hayes, Wellesley College, Wellesley, Mass. 



7. Illustrations of the Comitant Method of 

 constructing the Imaginary Loci of Analytic 

 Geometi-y, so as to render their Properties evi- 

 dent to the Eye. By Professor Frank H. 

 Loud, Colorado College, Colorado Springs. 



8. The Mass and Moments of Inertia of the 

 Earth's Atmosphere. By Professor R. S. Wood- 

 ward, Columbia University, New York City. 



9. A New Form of Pendulum for measuring 

 the Acceleration of Gravity. By Professor R. 

 S. Woodward, Columbia University. 



10. The Gravitation Constant and the Mean 

 Density of the Earth. By Professor R. S. Wood- 

 ward, Columbia University. 



11. The Substitution Groups of Order Fifty. 

 By Dr. G. A. Miller, Cornell University, Ithaca, 

 N. Y. 



12. Correction of Local Error in Stellar Pho- 

 tometry. By Henry M. Parkhurst, Brooklyn, 

 N. Y. 



13. Variation of Latitude and the Constant 

 of Aberration from Observations at Columbia 

 University Observatory, during the years 1892- 

 1898. By Professors J. K. Rees, Harold Ja- 

 coby and Dr. H. S. Davis. Read by Professor 

 J. K. Rees, Columbia University Observatory, 

 New York City. 



14. Photographic Researches near the Pole 

 of the Heavens. By Professor Harold Jacoby, 

 Columbia University Observatory. 



15. The Parallaxes of 61' and 62^ Cygni from 

 a Reduction of the Rutherfurd Measures. By 

 Dr. H. S. Davis, Columbia Univ. Observatory. 



16. The Praesepe Group : Measurement and 

 Reduction of the Rutherfurd Photographs. By 

 Dr. Frank Schlesinger, Columbia University. 



17. The Western Boundary Survey of Mary- 

 land. By Dr. L. A. Bauer, University of Cin- 

 cinnati, Cincinnati, Ohio. 



18. Linear Algebras. By Professor James 

 Byrnie Shaw, Illinois College, Jacksonville, 

 HI. 



19. A Simple Test as to whether a Continuous 

 Function possesses a Derivative ; with Applica- 

 tions to the Examples, hitherto devised, of Con- 

 tinuous Functions having no Derivative. By 

 Professor R. D. Bohannan, Ohio State Univer- 

 sity, Columbus Ohio, 



