340 RECORD OF SCIENCE FOR 1887 AND 1888. 



BIBLIOGRAPHY OF LITHOLOGY, 1887, 188S. 

 I. — Spkcial Treatises. Books. 



Dana, J. D. Manual of Mineralogy and Lithology. 4tli ed. 518 pj). 8vo. Wiley 



&Co. 

 Iddings, Joseph P. Microscopical Physiography of the rock-malcing minerals and 



aid to the microscopical study of rocks. H. Rosenbnsch. Translated and 



abridged for use in schools and colleges, pp. IWS. 8vo. Twenty-six plates of 



lihotomicrographs. 

 Mawek, W. Primer of Micro Petrology. London, Office of Life-Loi-e. 1888. 

 Michel-Levy, A., and A. Lacroix. Les Min^raux des Roches. Paris. Librairie 



Polytechnique.. Baudry & Co. 1888. 

 RUTLEY, Frank. Rock-forming miuei-als. Thomas Thurby. London, 1888. 8vo. 



pp. 25-2. 

 Rosenbusch, H. Mikroskopischo Physiographie der massigon Gesteine. Stuttgart, 



1837. 877 pp. and 6 plates showing micro-structnres. 



Hiilfstabellen zur mikroskopischen mitieralbestimmnng in Gesteinen. Stutt- 

 gart, 1888. ,^ 



II.— Current Literature. 



(«) RELATIXCi TO CONDITIONS OF CRYSTALLIZATION. 



Becker, George F. The Washoe Rocks. Bull. Cal. Acad. Sci., No. 6, January, 1887, 



vol. II, pp. <)3-120. 



— - The Texture of Massive Rocks. Am. Jour. Sci., 1887, vol. xxxiil, p. 50. 



UiLLER, J. S. The latest volcanic eruption in northern California, and its peculiar 



lava. Am. Jour. Sci., 1887, vol. xxxiii, p. 45. 



The rock described is a basalt, carrying primary <[uartzes. 

 Iddings, J. P. The nature and origin of Lythophysas, and the lamination of acid 



lavas. Am. Jour. Sci., 1887, vol. xxxiii, p. 36. 



Obsidian Clift', Yellowstone National Park. 7th Ann. Rep. U. S. Geol. Survey, 



J. W. Powell in charge, pp. 249-295. Ten full-page plates, showing macro and 

 macro-structures and four figures in text. Gov't Printing Office, 1888. 



A A^ery important paper, dealing with, the chemical composition and structure 

 of obsidians, mainly of the Yellowstone Park. There is shown to be in these 

 obsidians a gradual passage from pumiceous to lithodal and porphyritic, rhyo- 

 litic, and often more or less sphernlitic forms. The obsidian cliff flow is especiailly 

 remarkable for its extent and thickness, being equaled only by certain Mexican 

 occurrences. So far as known, it is the only occurrence in which a columnar 

 structure is developed. The absolute freshness of the rock, and absence of sec- 

 ondary alteration products, affords excellent opportunity for the study of the 

 pheuoniena of crystallization. The results obtained have been in part alluded to 

 in Mr. Iddings's ])aper on the origin of litho})hys!e, etc., already noted. 



On the origin of Primary Quartz in Ba.salt. Am. Jour. Sci., September, 1888, 



vol. xxxvi, pp. 2(18-221. 



Ji'DO, John W. The Natural History of Lavas as illustrated by the nuiterial ejected 

 from Krakatoa. Geol. Mag., January, 1888, p. 1. 



Lagorio, a. Ueber die Natur der Glasbasis sowie der Krystallisatiousvorgange im 

 eruptiven Magma. Min. und pet. Mittheilungen, viii. Band, VI. Heft, p. 421. 



Williams, George H. HoU>crystalline granitic structure in eruptive rocks of Ter- 

 tiary age. Am. Jour. Sci., 18S7, vol. xxxiu, 3d, p. 315. 



