204 PETROLOGI. 



Hall, Townshend, M. Note on the Occurrence of Mineral Oil in 

 Shale at Barnstaple. Trans. Devon. Assoc, vol. vi. part 2, p. 547. 



The object of this note is to record the discovery of a vein, highly 

 impregnated with mineral oil, traversing the Upper Devonian shale, 

 which was exposed in digging the foundations for some new buildings 

 at the lace-factory in the town. T. M. H. 



Hayes, S. D. Lignite from Louisiana. Chem. News, vol. xxx. 

 no. 774, pp. 153, 154 [from the ' American Chemist']. 



An analysis of a lignite, of which considerable deposits occur on the 

 banks of the Mississippi, about two miles below Shrevepoint. It has 

 been proposed to use this lignite as fuel for steamboats. F. W. II. 



Heidenhain", J. Chemisch-geolog-ische Betrachtung der Gypsvor- 

 kommnisse in der Zechsteinformation. [Gypsum in Zechstein.] 

 Zeitscli. deutsch. geol. Ges. Bd. xxvi. Heft 2, pp. 275-283. 



Describes the occurrence of gypsum as a rock in the Zechstein of the 

 Kyffhauser in the Goldene Aue, S.E. Hartz. Recognizes two beds, 

 and gives analyses of each ; the lower contains less gypsum and more 

 anhydrite than the upper. Befers the deposits to a marine origin, and 

 suggests the formation of the gypsum by alteration of anhydrite. 

 Sulphate of lime, if precipitated from solution under pressure of ten 

 atmospheres, falls as anhydrite ; and such a deposit might therefore be 

 formed at sufficient depth in the sea. F. W. R. 



HiLGARD, E. W. Silt Analyses of Soils and Subsoils. Amer. Journ. 

 ser. 3, vol. vii. pp. 9-17. 



The State Geologist of Mississippi has given the results of his exami- 

 nation of the physical qualities of various cotton-soils. The observa- 

 tions were made with the " churn elutriator," described in a previous 

 paper. "With this the soils are divided into the following constituents, 

 — coarse grit, fine grit, coarse sand, medium sand, fine sand, finest 

 sand, dust, silt of six degrees of fineness, and clay ; the percentages are 

 given in tabular form. E. B. T. 



Hilger, Prof. — . Ueber den oberfrankischen Eklogit. [Eclogite 



from Upper Eranconia.] Sitzungsb. phys.-med. Soc. Erlangen, 



Heft 6, pp. 96-99. 



Contains original analyses of specimens of Eclogite — one from Ep- 



penreuth, another from Silberbach, and the third from the Ealser Hohe, 



near Markt Schorgast. Separate analyses are given of the garnets 



and of the matrix of each of these rocks. E. ^Y. R. 



HoEENES, Rudolph. Vorlage von prismatischen Sandsteinen aus 

 der Gegend von Reichenberg in Bohmen, durch Herrn J. Baum- 

 heyer. [Prismatic sandstones from the neighbourhood of Reichen- 

 berg, in Bohemia.] Yerh. k.-k. geol. Reichs. pp. 401, 402. 



How, Prof. H. On Two Coals from Cape Breton, their Cokes and 



