356 Ninth Supplement to Dana’s Mineralogy. 
noticed only points in regard to American species; other exam- 
ples might be quoted to justify our assertion that the work, 
although of great value, is marred with evidences of haste in 
its compilation, but we ‘would not overlook the great services 
~ illustrious author has rendered to the science of Mineral ogy, 
which no better evidence could be quoted than the work we 
bev before us. 
Dr. Ernst Wess: Ueber die re ee or Mg Entwickel- 
ung des Quarzsystems. 4to, pp.102. Halle, 1 
Ausrecut ScurauF: Ueber die Kiyaaltorme des Kiesel- 
zinkerzes. 8vo, pp. 27, mit 6 Tafeln. ien 
_ AuBRrecut ScHravuF: Krystallographisch-optische Untersuch- 
ungen iiber die Identitiit des Wolnyn mit Schwerspath. 8vo, 
pp. 15, mit 8 Tafeln. Wien, 1860. 
H. DAvBER: Rrmitteleng krystallogra + oeonsi Constanten 
und des — ihrer Zuverlassigkeit (21. Akanthit). 8vo, pp. 18, 
a te 
AMMELSBERG: Ueber Isomorphie und Heteromorphie 
tei Fn Singulosilikaten von Monoxyden und Sesquioxyden. 
Pogg. Ann., cix, 584-94. 
J. Riteiany Buium: Handbuch der Lithologie oder Gestein- 
lehre. 8vo, pp. 356, mit 50 Figuren. Erlangen, 1860. 
W.H. MILER: Pivsinlingraiie Notices, containing obser- 
vations on the Employment of the Stereographic Projection of 
the Sphere in Crystallography ; on the Measure of the Dihedral 
Angles of Crystals; on the Cleavages of Rutile; on the doubly- 
refractive character of Thermophyllite. (L. £. and D. Phil. Mag., 
[4], xix, 325). 
J. P. Cooke: Crystalline Form not necessarily an indication 
of definite chemical composition; or on the possible Variation 
of the Constitution of mineral Species independent of the Phe- 
nomena of Isomorphism. (L. EF. and D. Phil. Mag., [4], xxi, 406, 
and this Journal, xxx, 194.) 
KE. Socutine: Die Einschliisse von Mineralien in krystallisir- 
ten Mineralien, nebst Betrachtungen iiber die Entstehung von 
Mineralien und Gebir rgsarten. 8vo, pp. 357. Freiberg, 1860. 
Des CLoIzeaux ET Damour: Examen des propriétés optiques 
et pyrogénétiques des mineraux connus sous les noms de Gado- 
linites, Allanites, Orthites, Euxenite, Tyrite, Saget et 
Fergusonite. Ann. de Chim. et de Phys, [3], lix, 35 
A. DELESSE: Recherches sur les Peesdomorphoses pp. 76. 
(Extrait des Annales des ens Xvi, os ay 
Aquitta SwirH: A ne ce Arrangement of the 
Simple “Minerals rt ai pea in plana (Dublin Quar. Jour. 
Sci., No. 1, Jan. 1861 
