212 rETROLOGY. 



Giimbel, Dr. C. W. Der skandinavische Aschenregen gegen Ende 

 Miirz 1875. [Scandinavian Ash-rain of March 1875.] Stuttgart. 



Hauer, Bergrath C. von. Analysen siidtirolischer Gesteine. [Ana- 



Ij'ses of S. Tyrol Eocks.] Verh. Jc.-Jc. geol. Reichs. pp. 331-334. 



Analyses of red orthoclase porphyry, from a dyke near Predazzo, and 



of hornblende-monzonite, which contains orthoclase and a triclinic felspar 



alHed to Bytownite. E. B. T. 



Hauer, C. Ritter von, und John Conrad. Arbeiten in dem chemi- 



schen Laboratorium der k.-k. geologischen lleichsanstalt. Jahrh. 



I'.-k. geol Reichs. Bd. xxv. Heft 2, pp. 141-206. 



Ilesults of work in the laboratory of the Vienna Geological Institute. 



Consists of analyses of graphites, coals, fire-clays, limestones, iron-ores, 



&c., from various parts of the empire. E. B. T. 



Havrez, Prof. Paul. Coal. Its constituents, properties, heating 

 power, and immediate sub-products. Coll. Guard, vol. xxx. 

 pp. 371-373, 526, 561, 562, 607. (Liege Association of Engineers.) 



A physical and chemical treatise, translated. 



Hawes, George W. Contributions from the Sheffield Laboratory of 



Yale College. No. xxxii. The Trap Rocks of the Connecticut 



Valley. Amer. Journ. ser. 3, vol. ix. pp. 185-192. 



Analyses are given of dolerites from 4 and of Diabase from 2 localities, 



both rocks coming from dykes cutting through Mesozoic sandstones. 



" There is a remarkable uniformity at all points in the ejected material, 



which seems to prove that, whether now anhydrous or chloritic, it 



must have had a common source, and this a deep-seated one." G. A. L. 



Hayes, A. A. On the wide difi*usion of Vanadium and its association 



with phosphorus in many rocks. Gliem. News, vol. xxxi. pp. 166- 



168, vol. xxxii. pp. 34-36. 



Maintains that "vanadium is as common a constituent of rocks as 



manganese." It usually occurs in association with phosphates ; these 



the author finds in all clays, in lavas, trachytes, slates, shales, coal, 



felspars, and many other rocks and minerals. Vanadium compounds 



are found in certains waters. F. W. R. 



Hilger, A. Ueber das Vorkommen des Lithiums in den Sedimentar- 

 gesteinen. [Occurrence of Lithium in Sedimentary Rocks.] Ber. 

 deutsch. chem. Ges. 8 Jahrg. pp. 335, 336. 

 Announces the detection of lithium in Triassic rocks in the neighbour- 

 hood of Wiirzburg. The writer finds it in almost all members of the 

 Lower and Upper Muschelkalk. He has also found lithium in the loess 

 of the Niddathal in Upper Hesse. P. W. R. 



Hofmann, Dr. JK. Die Basalte des siidlicheu Bakony. [Basalts of 



S. Bakony.] Jahrh. Iwn. ung. geol. Anst. Bd. iii. Heft iii. 



A description of the mineral ogical constitution of the basalts treated 



of by Beudant in 1818, by the study of microscopical sections, of which 



diagrams are given on 3 coloured plates. In the seccmd part the mode 



of the formation of the basalts and tufas is explained. J. S. 



