DAETON.] 



NORTH AMERICAN GEOLOGY. 



491 



Horsford, E. N. — Continued. 



On the solidification of the coral 



reefs of Florida and the source of car- 

 bonate of lime in the growth of corals. 

 Am. Assoc, Proc, vol. 7, pp. 122-147, 1854. 



Horsfield, Thomas. Mineralogical de- 

 scription of the Island of Banka. 



Am. iTour. Sci., 2d series, vol. 7, pp. 86-101, 

 1849. 



From Jour, of the Indiau Archipelago and 

 Eastern Asia, vol. 3, 1848. 



Hoiton, George F. Geology [of Bradford 

 County]. 



Med. Soc. Pennsylvania, Trans., 2d series, 

 vol. 4, pp. 48-54, and colored geologicil map, 

 1859. 

 Horton, William. Report on the geol- 

 ogy of Orange County, N. Y. 



Geol. Snrv., 3d Annual Eeport, pp. 135-175, 

 Albany, 1839. 



Abstract, Am. Jour. Sci., vol. 39, pp. 100-101 

 (§ p.), 1840. 

 Opinions of Dr. Horton on the super- 

 position, etc., of the rooks of Orange 

 County, N. Y. 



Geology of New York, first geological dis- 

 trict, by W. "W. Mather, p. 580, 4°, Albany, 

 1843. 

 Hotchkiss, Jed. On the Virginias; their 

 agricultural, mineral, and commercial 

 resources. 



Soc. Arts. [London], Jour., vol. 21, pp. 238- 

 251, 1873. 



Virginia : A geographical and polit- 

 ical summary, embracing a description 

 of the State, its geology, soils, miner- 

 als, climate, [etc.], 319 pages, 4 maps, 

 Richmond, 1876. 



The Smithers-Gauley tract of coal 



lands. 



The Virginias, vol. 1, pp. 47-49, plate, 4°, 

 1880, 



[ ] The resources of the Virginias on 



aud near the proposed route of the 

 Richmond and Southwestern Rail- 

 way. 



The Virginias, vol. 1, pp. 90-93, 106-109, map, 

 plate, 4°, 1880. 



[ ] The resources of the Shenandoah 



Valley near the line of the Shenandoah 

 Valley Railroad. 



The Virginias, vol. 1, pp. 36-37, 40, 56-57, 60- 

 61, plate, 4°, 1880. 



The coal lields of "West Virginia and 



Virginia in the great Ohio or trans- 

 Appalachian coal basin. 



The Virginias, vol. 1, pp. 18-21, map, 4°, 1880. 



Hotchkiss, Jed — Continued. 



[ ] The Iron and Steel Association of 



Virginia, limited. [Bratton Run ba- 

 sin.] 



The Virginias, vol. 2, 53, 4°, 1881. 



[ ] Craig Creek basin, its iron ores, 



etc. 



The Virginias, vol. 2, pp. 108-109, 4°, 1881. 

 The Korfolk and "Western and Shen- 

 andoah Valley railroads. 



The Virginias, vol. 2, pp. 119-121, 4°, 1881. 



[ ] Thickness of coal measures and 



beds in Great Kanawha coal fields, 

 West Virginia. 



The Virginias, vol. 3, p. 157 ft p.), 4°, 1882. 



The mineral resources of the region 



between the valley of Virginias and 

 the upper Potomac coal basin. 



The Virginias, vol. 3, pp. 66-67, map opp. 

 p. 72, 4°, 1882. 



The Van Buren Furnace estate, its 



geology, etc. 



The Virginias, vol. 3, pp. 8-9, 12, map, 4°, 

 1882. 



The Great Flat Top coal field. 



The Virginias, vol. 3, pp. 83-89, 92-98, 4°, 

 1882. 



[ ] The Dora, Va., "anthracite" coal 



mines. 



The Virginias, vol. 4, pp. 105-106, 4°, 1883. 



The natural coke of Virginia. 



The Virginias, vol. 4, p. 164, 4°, 1883. 



[ ] The lower Helderberg or No. VI 



limestones of Virginia. 



The Virginias, vol. 5, pp. 113-114, 4°, 1884. 



[ ] The geology of Highland County. 



The Virginias, vol. 6, p. 121 (| p.), 4°, 1885. 

 Hough, Franklin B. Observations on 

 the geology of Lewis County, N. Y. 



Am. Quart. Jour. Agri. and Sci., vol. 5, 

 pp. 267-274, 314-327, 1847. 



Description of mineralogical and 



geological specimens presented to the 

 museum. 



New York, 4th Annual Heport of the re- 

 gents of the TTuiversity on the State Cabinet 

 of Nat. Hist., pp. 82-90, 1851. 



On the cylindrical structure ob- 

 served in Potsdam sandstone. 



Am. Assoc., Proc, vol. 4, pp. 352-354, 1851. 

 Eemarks by Agassiz and Shepard, p. 354 

 (iP-)- 



On the existence of diluvial 



agencies during the earlier geologcal 

 periods. 



Am. Assoc. Proc, vol. 0, pp. 262-264, 1852. 



