







B ibliograp hy. 1 59 



indicating not only the contents and value of the books, but also the 

 principal libraries in this and other countries where they are to be found. 

 Mr. Slevens has already commenced his investigations in foreign libra- 

 ries. This gentleman is well known to be fully competent for the task, 

 though so arduous and difficult in its nature. 



16. Manual of Mineralogy or the Natural History of the Mineral 

 Kingdom; by James Nicol, F.R.S.E., F.G.S., Assist. Sec. Geo!. Soc. 

 London. — 576 pp. 12mo. Edinburgh. 1849. — This manual of mineral- 

 ogy is a thorough, accurate work, well worked up to the period of its 

 publication. It is very full in analyses and sufficiently so in notices of 

 localities. Naumann's system of crystallography and crystallographic 

 notation are adopted throughout, and under each species, the system of 

 crystallization with the notation of the common forms are mentioned; 

 but few angles are given and figures are but sparingly introduced. 

 The classification is a mixed system approaching in its general features 

 that of Mohs. It is as follows — 



I Order. Oxydized Stones. Families: Quartz, Feldspar, Scap- 

 olite, Haloid stones, Zeolite, Mica, Hornblende, Clays, Garnet, Gems, 

 Metallic stones. 



II Order. Saline Stones. Families : Calcspar, Fluor spar, Heavy 

 spar, Gypsum, Rock salt. 



HI Order. Saline Ores. Families : Sparry Iron ores, Copper salts, 

 Lead salts. 



IV Order. Oxydized Ores. Families: Iron ores, Tinstone, Man- 

 ganese ores, Red Copper ores, White Antimony ores. 



V Order. Native Metals. 



VI Order. Sulphureted Metals. Families: Iron pyrites, Galena, 

 Grey Antimony ore, Grey Copper ore, Blende, Ruby-blende. 



VII Order. Inflammables. Families : Sulphur, Diamond, Coal, Min- 

 eral Resins, Combustible salts. 



Isaac Lea : Observations on the genus fnio, together with descriptions of new^ 

 species in the families Naiades, Coiimaeea, Lynmacea, Melaniana, and Peristoroiana, 

 "*ith numerous plates. Vol. iv. Philadelphia. 



Sears C. Walker : Ephemeris of the Planet .,., , 



lande Observations of Mav 8 and 10, 1795, and for the oppositions of 1846, 1847, 



1848, and 1849, computed for the Smithsonian Institution. Appendix I to vol II, of 

 the Smithsonian Contributions to Knowledge, 32 pp. 4to. WaMnqUm, 1841). 



-Fourteenth Report of the Chester Co. Cabinet of Natural Science, March \i, 



1849, 8 pp. 8vo. West Ch ter. Pmn,, 1849. . 

 Dr. Ed. Schweizer : Praktische Anleitung zur Ausf iihrung quantitative!- ehemis- 



cher Anaiysen, mit einem Vorworte von Prof. Dr. Lowig. Mit vielen in den lext 

 I ei «gedruckten Holzsehnitten. 10 Bogen. 8 broch. 



y. Sartorius von W .ltershausen: Atlas der .Etna. Gottmgen. 

 , V. Strekfleuu; Die Entstehung der Kontinente und Gebiige miter dem Emnusse 

 f i der Notation nebrt einer Uebersieht der Geschichte des Europiii ien Bodens in geog 



nostisch-ormrraphi | I{T Bariehiav; mit einem kolorirtcn Attassa Vu ul 



Dr. A. S< UNREIN and Albert huHUM Vegetations-Verhaitni^^ der Jura 



La 



«nd Keuperfonnatioi. in dem Flu gebieten der Wornit* uud Altmuhl; nut einer 



R^noehach-topographiicben Karte de« Bearkea. NonBtngen ,WM. 



„, H. G. Bros.*? LetLa Geognot&a. Dritte Aaflag* Erste bis dntte L.eferung, 

 lafel I-XL. Preia fl. 10, 12 kr. R. 6. 11 *gr. , 



, *• J- Kauv and Dr. H. G. Bronx: Abbandlungen uber die gavial-art.pn Reyhboii 

 Jer Lias for, nation. Mit 4 Uthogmpbirten Tafeln in i I Blattern und 1 I \ ignettft 

 £*« fl. 5. R. 3. 5 Bgr. Nacbtrag hierzu von Dr. H. G. Bronn, mit 2 bththog. Taf. 



Pr eis fl. 3. R,' L 22* sgr. 



I 



