BOOK XV 



MINERALOGY. 



BY the kindness of W. H. Miller, Esq., Professor of Mineralogy in 

 the University of Cambridge, I am able to add to this part the 

 following notices of books and memoirs. 



1. Crystallography. 



Elemente der Krystallographie, nebst einer tabellarischen Uebersicht 

 der Mineralien nack der Krystallformen, von Gustav Rose. 2. 

 Auflage. Berlin, 1838. The crystallographic method here adopted 

 is, for the most part, that of Weiss. The method of this work has 

 been followed in 



A System of Crystallography, with its Applications to Mineralogy. 

 By John Joseph Griffin. Glasgow, 1841. Mr. Griffin has, however, 

 modified the notation of Rose. He has constructed a series of models 

 of crystalline forms. 



Frankenheim's System der Krystalle. 1842. This work adopts 

 nearly the Mohsian systems of crystallization. It contains Tables of 

 the chemical constitution, inclinations of the axis, and magnitude of 

 the axes of all the crystals of which a description was to be found, 

 including those formed in the laboratory, as well as those usually 

 called minerals; 713 in all. 



Fr. Aug. Quensteclt, Methode der Krystallographie, 1840, employs a 

 fanciful method of representing a crystal by projecting upon one faco 

 of the crystal all the other faces. This invention appears to be more 

 curious than useful. 



Dr. Karl Naumann, who is spoken of in Chap ix. of this Book, as 

 the author of the best of the Mixed Systems of Classification, publish- 

 ed also Grundriss der Krystallographie. Leipzig, 1826. In this and 

 other works he modifies the notation of Mohs in a very advantageous 

 manner. 



