MINERALOGY. 



By Prof. Edward S. Dana, 



Yale College, Neiv Havm, Conn. 



GENERAL WORKS OK MINERALOGY. 



The list of inineralogical works published iu 1885 includes a uew 

 editiou of Kaumanu's Elemente der Mineralogie. * This is the twelfth 

 edition of the work, and. likc^ the tenth, issued in 1877, and the eleventh, 

 in 1S81, has been edited by Professor Zirkel, of Leipzig. It includes the 

 numerous additions of the past four years, and since then the whole 

 matter has been thoroughly worked over. While not aiming at exhaust- 

 ive completeness, it yet gives much more than any other treatise in 

 the German language, and is a decided advance upon previous editions 

 of the work. The Lelirhuch der Mineralogie of Tschermak, the first edi- 

 tion of which was noticed in the report for 1883, has appeared iu a sec- 

 ond edition, with some minor additions and corrections. Increased 

 acquaintance with the work brings a higher api)reciation of its excel- 

 lence, more especially as regards its treatment of subjects in physical 

 mineralogy. The veteran Eussian mineralogist, N. v. Kokscharow, con- 

 tinues his labors with unremitting activity. The i)roduct of the past 

 year is an additional portion of the ninth volume of the Mater ialien zur 

 Mineralogie Russlands, covering pages 81 to 272, and giving a general 

 description of the species turquois, and supplementary chapters on 

 topaz, vesuvianite, nephelite, orthoclase (sanidiue) and linarite. 



A new edition of GvotWs Phf/silcalische Krystallographie hiis been pub- 

 lished, with a very large amount of new matter, increasing the size of 

 the volume nearly one-half. The additions are largely in the chapters 

 devoted to the methods and instruments employed in the study of the 

 physical characters of minerals, which are treated with a fullness that 

 leaves nothing to be desired. The work is comprehensive throughout 

 and only to be compared with Mallard's Traitc de Cristull<>gra2)hic,uoiu.ed 

 ill the report for 1884, which, however, occupies a somewhat different 

 field. Kosenbasch has completed a new edition of his invaluable Mikro- 

 fiLopisclie I'hysiographie der petrographisck wichtigen 3Iinerali(n, largely 

 increased in size and improved in every way. The work is uniivalled 



* J'or full titles of works mentioned, see the Bibliography at t^^he close of the chapter. 



687 



