24 



En el del presente año se halla la segunda pai-te de la Explicación ele- 

 mental de las mareas por M. P. Hatt, ingeniero hidrógrafo de la marina, 

 y consagrada al estudio del fenómeno local, pues el fenómeno general fué 

 ya tratado en el anuario anterior. 



Agenda Oppermann a l'usage des iiigénieurs, architectes, 

 agen t><- voy ers, conducfceurs de travaux, raécaníeiens, indus- 

 triéis, entrepreneurs. 1906. — Paris, Ch. Béranger. 417 pages. 



Este tomito se halla nutrido de un mateiial variado é interesante re- 

 lativo á geodesia, pesas y medidas, matemática, física, resistencia de ma- 

 teriales, química, electricidad, comercio é industria, correos y telégrafos, 

 etc. 



The Royal Astronomical Society of Canadá. Selected Papers 

 and Proceedings. 1904. Edited by C. A. Chant. Toronto. 1905. 

 8° xxvi-116 p. & plates. 



Astronomical and Astrophysical Progress during 1904 ( President's 

 Addr'ss, Jan. 10, 1905 ) — The Relation of Philosophy to Ancient and 

 Modern Cosmogonies, hy Prof. J. Watson. — Further Considerations on 

 Aerolithes, by W. H. S. Monck. — Some New Determinations of the Re- 

 flecting Powers of Glass and Silvered-Glass Mirirors, by C. A. Chant. — 

 Asti-ophysical Research, by W. B. Musson. — Observations on Variable 

 Stars, by J. M. Barr. — Recent Lunar Photogiaphs, by D. J. Howell. — 

 Theories of World Building, by A. P. Coleman, — (Jonfirmation of Mr. 

 Barr's Oljservation, by P. S. Yendell. — The Energy of Stpllar (^ollision, 

 by A. W. Bickerton. — An Elliptical Solar Halo, by A. F. Hunter. — Man's 

 Place in the Uni verse, by J. R. Collins. — Tho Sheibunie Meteoidte, by 

 L. H. Borgstrorn. — Magnetic Dist urbanccs, 1882-1903. a.s Recorded at the 

 Royal Observatory, Greenwich, and their Association with Suu-Spots, 

 by E. W. Maunder. — The Total Solar Eclipse of 1905. — In Memorian: 

 Arthur Harvey. 



