No. 8.] BIBLIOGRAPHY OF CONNECTICUT GEOLOGY. 3I 



108. Eckel, E. C. 



Brown hematite deposits of eastern New York and 

 western New England. 



Eng. Min. Jour., Ixxviii, 432-434, 6 figs., 1904. 



Two mines occur in Salisbury. The Davis mine from top to bottom 

 shows limonite and clay 15-20 ft.; ocher 20-40 ft.; lenses of manganese 

 ore; "black ocher" 1-5 ft. The ore contains manganese and slight amount 

 of phosphorus, and was originally deposited as limonite. The Ore 

 Hill mine consists of a large body of disintegrated ore mi.xed with clay. 

 The iron content runs from 35% to 50%. Manganese and iron car- 

 bonate, also phosphorus, occur. The ore originated as replacement of 

 limestone by iron carbonate. 



109. Eggleston, J. W. 



Some glacial remains near Woodstock, Connecticut. 

 Am. Jour. Sci., (4) xiii, 403-408, 1902. 



Description of kames, eskers, kettle-holes, and terraces of an old 

 lake bed of which Woodstock pond is the remnant. 



iio. Emerson, B. K. 



The age and cause of the gorges cut through the trap 

 ridges by the Connecticut and its tributaries. 



Am. Assoc. Adv. Sci., Proc, xxxv, 232, 1886. 



" The gorges were cut by the pre-Glacial drainage, and the streams 

 were restored to their old course by the position of their deltas." 



111. Emerson, B. K. 



Diabase, pitchstone, and mud inclosures of the Triassic 

 trap of New England. 



Geol. Soc. America, Bull., viii, 59-S6, 7 pis., 1897. 



The Meriden " Ash Bed " is described in detail, including the 

 petrography and chemistry of the pitchstone, glass and sand. The 

 origin of the glasses and minerals is discussed, and an analysis of the 

 basic pitchstone given. 



112. Emerson, B. K. 



Holyoke Folio, ^Massachusetts-Connecticut. 



U. S. Geol. Surv., Geol. Atlas U. S., Folio No. 50, 1898. 



Topography, general and economic geology of a strip about 2}/2 miles 

 wide along the north edge of Connecticut between the meridians 73° and 

 'j2.° 30'. Describes the following formations: Washington gneiss; 

 Becket gneiss; Hoosac schist; Chester amphibolite; Sugarloaf arkose; 

 Longmeadow sandstone; Holyoke diabase; Chicopee shale; and Glacial 

 deposits. 



113. Emerson, B. K. 



Geology of eastern Berkshire county, Massachusetts. 

 U. S. Geol. Surv., Bull. No. 159, 135 pp., 9 pis., 16 figs., 

 maps, 1899. 



Geology of parts of the towns of Norfolk, Colebrook, North 

 Canaan, and Hartland. In the North Canaan-West Norfolk area are 



