124 



GEOLOGY. 



Jackson, W. H. Descriptive Catalogue of the Photographs of the 

 United States Geological Survey of the Territories for the years 

 1869 .to 1875. Ed. 2, pp. 81. 8vo. Washingion. [Ed. 1 

 noticed in Geological Recoed for 1874, p. 121.] 

 Jones, Capt. W. A. Kcport upon the Reconnaissance of North- 

 western Wyoming, including Yellowstone National Park, made 

 in the summer of 1873. Pp. 326 ; maps. 

 Lawson, J. S. [Letter on bones, &c. found at Scatchel Head, Whidley 



Island.] Proc. Calif. Ac. Sci. vol. v. pt. 3, pp. 379, 380. 

 Le Conte, Prof. Joseph. On some of the Ancient Glaciers of the 

 Sierra Nevada. Amer. Journ. ser. 3, vol. ix. pp. 126-139, one 

 fig. in text. 

 Describes the larger tributaries of the Great Lake Valley Glacier, 

 viz. the Truckee Cafion and Donner Lake Glaciers, the Cascade Lake 

 Glacier, the Emerald Bay Glacier, the beds of which all run into Lake 

 Tahoe. That this lake was once occupied by ice the writer thinks is 

 certain ; that it was scooped out by the Lake Yalley Glacier he con- 

 siders rather less certain. Erom its position it may be a "plication 

 hollow; " but all the other Sierra lakes which he has seen owe their 

 origin to glacial agency. All the land for 3 or 4 miles from the lake 

 margin, both N. and S. of Rubicon Point, is formed of confluent glacial 

 deltas. The moraines of these tributary glaciers are all parallel ; there 

 are no terminal moraines ; neither are there true lateral moraines. 

 Relieves that glacier erosion is not only a grinding and scoring, but also a 

 crushing and breaking — an alternate roi7gh hewing and planing. G. A, L. 

 Leeds, Prof. A. R. Asphaltic Coal from the shale of the Huron 



River, Ohio. Ann. Lye. Nat. Hist. N. York, June. 

 Seam 2 inches thick, with much sulphate of barjta. Occurs in oil- 

 shales of Pennsylvania and Ohio. 



Lesley, Prof. J. P. Coal-beds in the Subcartoniferous of Pennsyl- 

 vania. Amer. Journ. ser. 3, vol. x. pp. 153, 154. 

 Announces the discovery of several " baby coal beds " in No. x. 

 Upper or White Catskill, Rogers' Vespertine, Berea Grit of Newberry. 

 This (xplains the 2 coal beds in the face of the Alleghanies and the 14 

 small ones W. of the Peak mountain in Wythe County, S. Virginia. 



G. A. L. 

 . Second Geological Survey of Pennsylvania. Report of Pro- 

 gress for 1874. Harrishnrg. 

 Includes report on the Petroleum of Pennsylvania by H. E. Wrigley. 

 Little, George. Report of progress of the Mineralogical, Geological, 

 and Physical Survey of the State of Georgia for the period from 

 Sept. 1 to Dec. 31, 1874. 

 Loew, Oscar. Lieutenant J. II. Wheeler's zweite Expedition nach 

 Neu-Mexico und Colorado, 1874. [Wheeler's 2nd expedition to 

 New Mexico and Colorado.] Petermann's Mittheil. Bd. xxi. 

 pp. 441-454. 

 Gives an account of the expedition, with notes on the ores and 



