110 Scientific Intelligence. 



No. 7. The Orbit of R Canis Majoris; by Frank C. Jordan. 

 Pp. 49-52. 



No. 8. Anomalous Refraction at the International Latitude 

 Stations in 1902, 1903 and 1904; by Frank Schlesinger and 

 Charles J. Hudson. Pp. 55-57. 



No. 9. The Determination of Star Positions by means of a 

 wide-angle Camera ; by Frank Schlesinger and Charles J. 

 Hudson. Pp. 59-75. 



No. 10. The Orbit of 18 Aquilae ; by Frank C. Jordan. 

 Pp. 77-82. 



4. Publications of the United States Naval Observatory, 

 Capt. J. L. Jayne, U. S. N., Superintendent. Second series. 

 Volume VIII has the following title : Vertical Circle Observa- 

 tions made with the five-inch Alt- Azimuth Instrument, 1898-1907; 

 by F. B. Littell, G. A. Hill and H. B. Evans ; reduced by 

 F. B. Littell. Pp. xxxvii, 463 ; 3 pis. Washington, 1914. 



5. Peander Mc Cormick Observatory of the University of 

 Virginia, S. A. Mitchell, Director. The following publications 

 (reprinted from the Astrophysical Journal) have recently been 

 separately issued: Vol. II, part 2: Wave-Lengths of the Chromo- 

 sphere from Spectra obtained at the 1905 Eclipse; by S. A. 

 Mitchell. Part 3. The Depth of the Reversing Layer ; by S. 

 A. Mitchell. 



6. Carother^s Private Astronomical Observatory, Houston, 

 Texas. — Bulletin No. 2, recently issued, is as follows : Confirma- 

 tion of the Solar Hypothesis for "The Central Law of the 

 Weather." 



7. Napier Tercentenary Celebration and Mathematical Collo- 

 quium. — A circular signed by C. G. Knott, General Secretary, 

 announces that immediately following the Napier Celebration, a 

 Mathematical Colloquium will be held at Edinburgh on July 

 24-27 (see vol. xxxvii, p. 288), under the auspices of the Edin- 

 burgh Mathematical Society. Lectures will be given on Nomog- 

 raphy, by M. d'Ocagne, of Paris ; on Infinity in Geometry, by 

 H. W. Richmond, of Cambridge ; on Critical Studies of Modern 

 Electric Theories, by E. Cunningham, of Cambridge ; on The 

 Solution of Algebraic and Transcendental Equations in the 

 Mathematical Laboratory, by E. T. Whittaker, of Edinburgh. 



The fee for the Colloquium is 15s. Those who desire to 

 become members are requested to communicate as soon as possi- 

 ble with P. Comrie, 19 Craighouse Terrace, Edinburgh. A 

 remittance of £1 will cover ordinary membership of both the 

 Napier Celebration and the Mathematical Colloquium. 



8. Logarithmic Reduction Tables for Students of Analytical 

 Chemistry ; by Charles J. Moore. Pp. 78. Boston & New 

 York (Ginn & Co.). — The object of this little book is well stated 

 in the preface, as follows : " The aim of the author has been to 

 supply students of analytical chemistry with accurate tables, 

 covering gravimetric, volumetric, and gas analysis, for which 

 they have constant use. In order to meet the needs of the begin- 

 ner, the method of using each table is fully explained. * * Six-place 



