20 MEMOIRS NATIONAI. ACADEMY OF SCIENCES. cvol.xii. 



Su'pl. lot 121. Grant, Term. About 5 miles downstream from Fishdam, September 7, 1901. 

 About H miles southeast of Ruthten, Tenn. Bristol sheet. This is a series of dead and weath- 

 ered shells found upon a sand bar near the railway bridge. 



Lot 9Jf. Bluff City, Tenn. About 16 miles downstream from Fishdam, October 12, 1900. 

 These shells were taken from a strip of the river reaching from the miU above the town down- 

 stream and past it for about one-half mile. The shells were widely scattered and could not 

 have been found without clear water. The water of this stream when clear is a beautiful blue- 

 green, quite in contrast with the "freestone" areas, where the iron stains the bowlders and river 

 bed and thus gives a dark background for the water. . Roan Mountain sheet. 



A previous examination had been made of the river at this point on August 23, 1900, but 

 rains had so roiled the water that only dead shells were found upon the sand bars, lot 192. Thia 

 fact is of interest for its bearing upon the reliabihty of such sand-bar samples as an index to the 

 presence of the shells in a given locaUty. Elsewhere such a criterion became of much value. 

 This is the form verrucosa, plate 41. 



Sufl. lot 158. Bluff City, Tenn. Collected by W. M. Madison, November 18-23, 1901. 



Swpl. lot 192. Bluff City, Tenn. Sand-bar collection of dead shells. August, 1900. 



The Watauga River was examined at Carter, Tenn., where the Southern Railroad crosses 

 it; and also at Elizabethtown, Term., but no lo were found at either place. The headwaters 

 of the Watauga are largely from ' 'freestone." This stream joins the South Fork of the Hols ton 

 about 11 miles below Bluff City and about 18 miles above Rotherwood. 



Group 14. Supl.lot 112. Peltier, Tenn., now called Lovedale. This locality on the South 

 Fork is about 2 miles above the confluence of the North and South Forks of the Holston. There 

 is a large island in the river at this point; and at its head, among the gravel, were found large 

 numbers of dead but no fresh lo shells. August 11, 1901. These shells appear intermediate 

 between recta and verrucosa, but this is due to the fact that the sharp points of the spines 

 have been worn off during transportation. Evidently recta reaches upstream above Peltier. 

 This is a large series of several hundreds of specimens. 



Lot 175. Kingsport, Tenn. Collected by May Netherland, October 11, 1902. Estillville 

 sheet. These are the form recta. A large series. 



Lot 178. Jourdans Dam, above Rotherwood, Tenn. Near the junction of the two forks 

 of the Holston. November 2, 1902. Collected by May Netherland. This lot is really in the 

 North Fork of the Holston, but it is here included because of its intimate relation to the South 

 Fork shells, which are also recta. A large series of shells. 



Swpl. lot 176. Kingsport, Tenn. Horse Ford, November 2, 1902. Collector, May Nether- 

 land. Forty-two shells in this lot. 



Supl. lot 177. Kingsport, Tenn. Lynns Ford, one-half mile east of town, November 2, 

 1902. Collector, May Netherland. Ninety-one shells in this lot. 



Supl. lot 179. Kingsport, Teim. May 18, 1901. Collector, May Netherland. A large 

 collection of several hundred shells, of the form recta. 



It should be recalled that much of the South Fork drainage comes from a mountain district. 

 In the vicinity of the junction of the Middle and South Forks (Barron, Va.) it rained every day 

 for about three weeks (August and September, 1901), and many of these rains were such down- 

 pours that the river became a raging torrent. The Watauga drains even more mountainous 

 country, and these conditions easily account for the destruction of these shells noted in lot 112, 

 (Cf. Ayers and Ashe, 1905, p. 91.) 



c. Holston River (proper), Rotherwood to mouth. 



Group 15. Supl. lot 86. Curry Ford, Tenn., southeast of Church Hill. September 26, 

 1900. Estillville sheet. A series of about 10 shells. 



Supl. lot 85. Hord Ford, New Canton, Tenn. September 26, 1900. Estillville sheet. 

 Two shells, one resembling recta and the other undulate and relatively smooth on part of the 

 body whorl. 



