Third Supplement to Dana's Mineralogy. 247 



lations are given. This new work gives the mathematical demonstrations, com- 

 mencing with the principles of analytical geometry. The two were more conven- 

 iently incorporated in one work, in Naumann's 2nd edition of his Crystallography 

 published in 1830. Naumann is the best author on the science of Crystallography. 



: Elemente der Mineralogie, 4th ed., 480 pp. 8vo. With 398 wood-cuts. 



Liepzig. 1855. ^ 



A. Dufrenoy: Traite de Mineralogie, 2me edit, considerablement augmentee. 

 Tome 2 et Tome 5, lere partie, et Atlas de 80 planches. 8vo. Paris, 1856. 



Chevalier Fr. vox Hauer & Fr. Fostterle: Coup d'ceil geologique sur les 

 Mines de la Monarchie Autrichienne, redige par order de l'lnstitut Imperial et Royal 

 de Geologie, avec une introduction par M. Haidinger. — 252 pp. large 8vo, Vienna, 

 1855. 



G. H. Otto Volger : On Leuchtenbergite and its associates, Hydrargillite, Garnet, 

 Perofskite, Magnetite, Talc-apatite, <fec. Pogg. xcvi. 414 and 559. Contains obser- 

 vations on the analyses by other authors, with some deductions that require more 

 investigation to give them currency. 



Theodor Kjerulf (Adjunct an der Univ. Christiania) : Das Christiana-Silurbeck- 

 en, chemisch-geognostisch untersucht. Auf Veranstaltung des Academischen Colle- 

 giums herausgegeben von A. Strecker. 68 pp. small 4to., with a geological chart. — 

 This work treats of the Silurian geology of Christiania, and especially from a chem- 

 ical point of view, giving many analyses, (of granites, porphyries, syenites, traps, etc.) 

 and the bearing of the subject on the origin of the rocks. 



Dr. Gustav Georg Winkler: Die Pseudomorphosen des Mineralreichs. 136 pp. 

 8vo. Miinchen : 1856. J. Palm. — A clear and systematic review of the subject of 

 pseudomorphism. The author recognizes two kinds of pseudomorphism : that due 

 to alteration of the original material, and that due to substitution of one mineral 

 for another; the first produced mainly through atmospheric agencies, infiltrating 

 waters, and ingredients of the soil ; the second through solution, the less soluble 

 species being in solution and replacing the more soluble. He object* to regarding 

 the instances of a change of a dimorphous substance from one state to the other 

 (such as that of aragonite to calcite, while still retaining the aragonite form) as pseu- 

 domorphs. He also takes no notice of those pseudomorphs which arise from one 

 mineral covering or encasing another and copying in reverse its exterior form, or 

 from filling a cavity once occupied by a crystal. Each of these kinds merits at least 

 brief mention in a complete work on the subject. The cubic quartz produced by 

 incrusting or covering over fluor is a common example ; the form is pseudo-crystal- 

 line : and several other pseudomorphs supposed to be produced by substitution 

 through solution, may have been a result of this moulding process. The decom- 

 position of pyrites leaves a cavity which another infiltrating mineral may fill, taking 

 its form and surface strise. 



A. Scacchi: Memoria sullo Incendio Vesuviano del mese di maggio 1855, fatta 

 per incarico della R. Accad. delle Sci. dai Socii G. Guarini, L. Palmieri, ed A. Scacchi, 

 preceduta dalla relazione dell' altro incendio del 1850, fatta da A. Scacchi. 208 pp. 

 4to. with 6 plates. Napoli, 1855. 



J. A. Hugard : Museum d'Histoire Naturelle : Galerie de Mineralogie et de Geol- 

 ogic Descriptions des Collections, Classement et Distribution des Mineraux, Roches, 

 Terrains, et Fossiles, etc. 190 pp. 16 mo. Paris: 1855. 



G. C. Swallow : First and Second Annual Reports on the Geological Survey of 

 Missouri, 204 and 240 pp. 8vo, with plates and sections. Besides the Report of 

 Mr. Swallow, there are also the reports of Dr. Litton and Messrs. Meek, Hawn, and 

 B. F. Shumard. Dr. Litton is chemist to the survey, and his report contains many 

 analyses of limestones, iron ores, etc. (vid. this Jour., xxi, 427). 



Jas. M. Safford : Geological Reconnaissance of the State of Tennessee, being 

 the author's first biennial Report. 164 pp. 8vo. Nashville, Tenn., 1856. Contains 

 information on the ore beds or veins of the State, of Iron, Copper, Lead, Zinc. 



