REPORT OF COMMITTEE ON PHOTOGRAPHS. 625 



163. Old Faithful in eruption. Upper geyser basin, Yellowstone National Park. 



Size, 10 X 13 inches. Photographed by W. H, Jackson. 



164. Calcareous tufa bank, Cement creek, Gunnison county, Colorado. Face seen is 



40 to 50 feet high, overhanging in places, forming grottoes. Size, 8x10 inches. 

 Photographed by C. Whitman Cross, July 28, 1885. 



165. Calcareous tufa deposit, near view of central portion of bank shown in No. 164. 



Size, 8 X 10 inches. Photographed by C. Whitman Cross, July 28, 1885, 



166. Mammoth hot springs, Yellowstone National Park. Size, 10 x 13 inches. Pho- 



tographed by W, H. Jackson. 



167. Mammoth hot springs, Yellowstone National Park. Size, 10 x 13 inches. Pho- 



tographed by W. H. Jackson. 



Dismal Swamj) Series. (Photographed by I. C, Russell, April, 1889. Size, 6 x 8 



inches,) 



Nos. 168, 169, 170, 171, 176, 178, 180, 183 published by Professor N. S. Shaler in 

 Tenth Ann, Rep. U. S. Geol, Survey, with plate numbers as below. 



168. View showing the general aspect of the swamp in the district where the forest 



is relatively dense. In the foreground a single elevated root arch of the black 

 gum is plainly shown, also a great number of cypress knees. PI. XXIX, 



169. Southern margin of Dismal Swamp, 12 miles west of Elizabeth City, North Caro- 



lina, showing the general aspect of the swamp in the month of May. The spur- 

 like projections in the foreground are the knees belonging to the roots of the 

 large cypress on the left hand. The gnarled excrescences at its base exhibit 

 one type of root arches. In the center of the picture is a single root arch of the 

 common type. PI. VIII. 



170. View showing general aspect of the wide, swampy channels which connect the 



main Dismal swamp with the tributary morasses lying to the west. PI. XV. 



171. View of the swamp about a mile and a half east of Drummond lake, showing 



the ordinary condition of the wetter parts of the swamp in the growing season. 

 PI. IX. 



172. Southern margin of the swamp near Elizabeth City, North Carolina. 



173. View near the southern border of the main swamp near Elizabeth City, North 



Carolina. 



174. View of Jericho ditch. 



175. Cypress trees in the eastern part of Lake Drummond. 



176. Cypress trees in the eastern part of Lake Drummond. PI. X. 



177. View of the western shore of Lake Drummond, showing the wall-like character of 



the forest growth. 



178. View of Jericho ditch. The foliage on the right hand represents a cane-brake. 



The trees on the left hand of the picture are of second growth. 



179. View of Jericho ditch, 



180. View showing thinly wooded portion of the main swamp area. The trees are 



mostly of second growth ; the surface bears a scanty growth of cane, PI. XVI. 



181. View showing the general aspect of the wide, swampy channels connecting the 



main Dismal swamp with tributary morasses lying to the west of that area, 



182. View of Jericho ditch. 



183. Dismal Swamp canal, looking southward from the village of Wallaceton. The 



land on either side has been reclaimed from the original condition of swamp. 

 PI. VII. 



SEISMIC PHENOMENA. 



Effects of the Charleston Earthquake. (Photographed under the direction of W J 

 McGee by C, C. Jones, September 3-7, 1886. Size, 10 x 13 inches.) 



Nos. 185, 188, 189, 199, 202, and 203, published by C. E. Dutton in Ninth Ann, 

 Rep,, U. S, Geol. Survey, with plate numbers as below. 



