82 



Department of Commerce and Labor. Report of the Sup- 

 erintendent of the Coast and Geodetic Survey showing the progress 

 of the work from July 1, 1906 to June 30, 1907. Washington. 

 Grovernment Printing Office. 1907. 4° 565 pp. Pl. & maps. 



Contents: Report of the Superintendent, p. 7-20. — Appendices; Details 

 of field and offices operations, p. 21-66. — The earth movementsin the Ca- 

 lifornia earthquake of 1906, by J. F. Hayford and A. L. Baldwin, p. 67- 

 104 (2 maps in colors). — Six primaiy bases measureó. with steel and invar 

 tapes, by O. B. French, p. 10.5-156. — Results of magnetic observations 

 made by the Coast and Geodetic Survey between July 1, 1906, and June 

 30, 1907, by R. L. Faris, p. 157-230.— Manual of Tides. Pavt V. Currents, 

 shallow-water tides, meteorological tides, and miscellaneous matters, by 

 R. A. Harris, p. 281-546 (23 diagr. 7 charts.) — Long wire drag, by N. H. 

 Heek, p. 547-561 (7 diagr. 7 illustr.) 



Sur la constitution intime des calcaires par E. Leduc, Clief 

 de la Section des Matóriaux des Construction au Laboratoire 

 d'Essais au Conservatoire national de.s A.rts et Métiers. — (Bu- 

 lletin du Laboratoire d'Essais. N? 10). — Paris. Librairie Poly- 

 technique, Ch. Béranger. 1907. 8? 98 pages, 4 pl. 38 tableaux. 

 20 fr. 



En este interesante libro están reunidos los resultados de los experi- 

 mentos ejecutados en una gran variedad de cales, cementos y morteros, 

 de manera que presenta muy importantes datos acerca de las propiedades fí- 

 sicas y (imposición química de esos matei-iales, sobre todo lo relativo á su 

 cocimiento, apagado, fraguado, resistencia á la tracción, á la flexión y á 

 la compresión, expansión, plasticidad, deformación, etc. 



A Dictionary of Spanish and Spanish American Mining, Me- 

 tallurgical and allied ternas to whieh some Portuguese and 

 Portuguese-American (Brazilian) ternas are added by Edward 

 Halse, A. R. b. M., Miembro correspondiente de la Sociedad 



