534 SCIENTIFIC RECORD FOR 1882. 



first volume, the only one thus far published, is devoted to the theoret- 

 ical portion of the subject, leaving the description of species for another 

 volume. The work has many excellent features, and it is worthy of note 

 that it is the first important contribution to mineralogical treatises pub- 

 lished in England since the Mineralogy of Greg and Lettsom in 1858. 

 The second edition of Groth's Tabellarische Uebersicht der Mineralien, 

 tfcc, published in 1882, is a work of more importance than might appear 

 at a first glance. It professes to be only a system of tables giving a 

 statement of the crystalline system and chemical composition of each 

 species, designed especially for the use of the student in the lecture- 

 room; but in the discussion of the chemical formulas of the species, 

 many new points are brought out, and in their classification, the rela- 

 tion of the species, especially on the chemical side, has been developed 

 with an unusual clearness. The book is consequently a real contribu- 

 tion to the development of the science. 



A third appendix to the fifth edition of Dana's System of Mineralogy 

 has been recently published (April, 1882), covering the period from 1875 

 to 1882. It is comprehensive in its scope, and gives full descriptions of 

 the species announced as new, and also references to all mineralogical 

 memoirs and articles, large and small, which have appeared during the 

 seven years mentioned, with a brief mention of the contents of the more 

 important. Some idea may be formed of the amount of mineralogical work 

 done in recent times from the fact that this appendix covers 134 large 

 octavo pages in small type; and also of the zeal for naming "new species" 

 from the fact that 300 new names are here included. 



Among mineralogical works of a more local character is to be mentioned 

 first, the continuation of the Materialien zur Mineralogie Busslands by 

 Kokscharof, of which great work the eighth volume is now completed. 

 The monographs of the crystalline form of the species contained in these 

 volumes are models of accurate, careful work. The third edition of the 

 Mineralogia, by Domeyko, is also an important work. It was published 

 in 1879, and a first appendix to it appeared in 1881. This work gives a 

 complete account of the present state of the mineralogy of Chili and the 

 neighboring countries of South America. Although far removed from 

 the great centers of science, Professor Domeyko has carried on his work 

 for many years with great zeal, and his labors have done much to make 

 known the remarkable mineral riches of the countries in which he is 

 interested. Another important work is that on the minerals of New 

 South Wales, by A. Liversidge, which covers 140 pages. 



Among works of a more special character is to be mentioned the 

 ^ammlung von Mikrophotographieen, (&c., by Cohen, which gives on a 

 series of quarto plates excellent i)hotographs of the various points of 

 interest involved in the microscopical study of minerals and rocks ; some 

 of these are the inclusions in crystallized minerals, the phenomena of 

 abnormal double refraction, figures produced by etching, the kinds of 

 cleavage and structure, and so on. The execution of these plates leaves 



