MINEEALOGY. 



By Edward S. Dana, 



Professor in Yale College, New Haven, Conn, 



The following pages contain a summary of the progress of Mineralogy 

 during the years of 1881 and 1882. The attempt has been made to give 

 as complete a statement as possible, in the allotted space, of the recent 

 advances made in the different departments of the science. Especial 

 attention is devoted to the mineralogical discoveries in America. In 

 presenting the subject, the recent contributions to general mineralogi- 

 cal bibliography are first mentioned ; then follows a general statement 

 of work done in crystallography and physical mineralogy ; following 

 this is given an account of recent investigations on the chemical side 

 of the subject; next comes a somewhat particular statement of dis- 

 coveries of new localities of minerals; and finally descriptions are 

 given of the new species added to the science. 



1. GENEEAX, WOEKS ON MINERALOGY. 



The most important of the recent additions to the works on general 

 mineralogy is the eleventh edition of the Elements der Mineralogie of 

 Naumann, edited by Zirkel. Since the publication of the first edition 

 in 1846, Naumann's Mineralogy has been the standard work in Ger- 

 many; and the later editions have more thoroughly established its 

 position. Since the death of the author in 1873, the work has been 

 continued by Zirkel, and two editions have been published under his 

 editorship; the tenth in 1877, and the eleventh in 1881. The funda- 

 mental changes introduced by him in the classification of species and 

 other respects have brought the work more into harmony with modern 

 views. Of the large number of other mineralogical books recently pub- 

 lished in the German tongue, the majority are of an elementary char- 

 acter. The Lehrhuch der Mineralogie, by Tschermak, however, deserves 

 especial mention, because of the clear and satisfactory manner in which 

 the physical portion of the subject is treated ; the descriptive part is, 

 however, rather meager and inadequate. It is stated that an English 

 translation is soon to appear ; and if so, it will doubtless meet with a 

 good reception. 



An addition to the list of English mineralogical text-books has been 

 made by Bauerman in his Text Book of Systematic Mineralogy. The 



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