

Geology and Mineralogy. 337 



7. Mineralogie cle la France et de ses Colonies. Description 

 Physique et Chimique des Min'eranx • Etude des Conditions 

 Geologiques de lews G-isements ; by A. Lacroix. Vol. IV. 

 Part I, pp. Hi, 1-360 ; Part II, pp. 361-924. Paris, 1910 (Ch. 

 Beranger). — The author is to be congratulated as well as the 

 mineralogical public, in that the great work which he undertook 

 some seventeen years since has now been brought to a successful 

 conclusion. The four volumes which have been published give 

 an admirable account of the minerals of France and the French 

 Colonies. The work of the author is always thorough and orig- 

 inal, and the description of species contains much that is import- 

 ant and new. Volume four, which has recently been issued in 

 two parts, is devoted for the most part to the sulphates, phos- 

 phates, and related compounds. There is also a Supplement of 

 more than two hundred pages, made necessary by the discoveries 

 of recent years. The work is well printed and fully illustrated. 



8. Practical Mineralogy Simplified for Mining Students, 

 Miners and Prospectors ; by Jessk Perry Rowe. First Edition. 

 Pp. 162. New York, 1911 (John Wiley & Sons).— This little 

 book has been prepared with the object of putting before practi- 

 cal miners a simple and elementary description of the commonly 

 occurring minerals and ores, with a means for their investigation. 

 The species are grouped according to the prominent metals 

 present, and two large tables give a summary of the characters 

 for non-metallic and metallic minerals respectively. 



9. Calcites of New York ; by Herbert P. Whitlock, Pp. 

 190, 27 plates. New York State Museum, John M. Clarke. 

 Director. Memoir 13. Albany, 1910. — The species calcite is an 

 almost inexhaustible subject from the standpoint of the crystal- 

 lographer, and many important monographs have been published 

 describing the forms from different localities. The author has 

 now taken up the calcites of New York, which have been obtained 

 from a wide range of different localities, among which that of 

 Rossie has been famous for nearly 100 years. The thoroughness 

 of this investigation will be appreciated from the fact that some 

 twenty -five plates are needed to show the different types of crys- 

 tals with their wide range of forms ; among these a considerable 

 number of new ones are noted. 



'1.0. Pes Min'eraux des Pegmatites des Environs d' Antsirabe 

 a Madagascar ; par L. Duparc. Mem. Soc. Phys. et d'Hist. Nat. 

 de Geneve, xxxvi, fasc. 3, pp. 283-410, 1910. — In this work the 

 author gives an account of his investigations of the pegmatite 

 dikes of a part of Madagascar, which in recent years have fur- 

 nished the markets of the world with beautiful gem-stones and 

 fine crystals for mineral collections. In the laboratory study of 

 the material collected the author was aided by his assistants, 

 MM. Wunder and Sabot. A short sketch is given of the geology 

 of the island ; there follows a general description of the occur- 

 rence of the dikes, accompanied by a detailed account of the 

 separate localities visited, where work of exploitation is going 



