AMERICA. 137 



of the Coast Range, sections across which show more or less sharp folds 

 without any central core, and the occurrence of flattened nodules in 

 connexion with lignites, regarded as representing clay pellets rolled 

 and deposited when the coaly matter was in a semiliquid state, and 

 subsequently deformed by pressure in the formation of the mountain- 

 chain. G. A. L. 



Lesley, [Prof.] J. P. Historical Sketch of Geological Explorations 

 in Pennsylvania and other States. With an Appendix containing 

 the Annual Reports of the State Geologist to the Board of Com- 

 missioners. Second Geological Survey of Pennsylvania, pp. xxvi, 

 200. 8vo. Ilarrisburg. 



Little, Dr. (Jeorge. Second Report of Progress of the Mineralogical, 

 Geological, and Physical Survey of the State of Georgia for 1875. 

 Pp. 16. 8vo. 



A preliminary general Report. A list of the minerals, metals, and 

 building-stones found in 76 counties of the state is given. 



Lloyd, T. G. B. Geological I^otes from the State of New York. Quart. 



Journ. Geol. Soc. vol. xxxii. pp. 76-79, abstract. 

 Describes glacial beds, striae, «fec., and flower-pot shaped blocks of 

 Potsdam sandstone in Jefferson County. 



Ludlow, Capt. W. Report of a Reconnaissance from Carroll, Mon- 

 tana Territory on the Upper Missouri, to the Yellowstone National 

 Park and return, made in the summer of 1875. Ann. Mep. Chief 

 Engineers. Appendix NN, pp. 142 ; plates. 8vo. 

 E. S. Dana and G. B. Grinnell report on the geology. For Pale- 

 ontology, see 2>ost, under Whitfield. 



Marks, W. D. On the occurrence of native Zinc. Amer. Journ. 



ser. 3, vol. xi. p. 234. 

 Note of occurrence in the soil along the course of a vein in the blue 

 limestone of Sand Mountain, N.W. Alabama. 



Martin, Prof. D. S. On the Rocks of New York Island and their 

 relation to the geology of the Middle States. Proc. Liverpool Geol. 

 Soc. part ii. vol. iii. pp. 118-122. 

 The form of the island is due to the uniform N.N.E. strike of the 

 gneissoid schist of which it is composed. The ridge on which New 

 York stands is part of a range of crystalline rocks running parallel to 

 the Atlantic coast for 700 miles, and dividing the Triassic from the 

 Cretaceous rocks, the former lying on the W. flanks and dipping west- 

 ward, the latter on the E. and dipping eastward. C. E. J). 



Mayne-Reid, Capt. On Lakes covered by a Matrass of entangled 



Ycgctation. Land and Water, March 4, p. 180. 

 Chalco and Xochimilco Lakes in the S. part of the Plain of Mexico 



