286 RECORD OF SCIENCE FOR 1886. 



Williams, Henry S. — Continued. 



stage of the fauna is all tliat appears, and is there represented by a few 

 specimens in the very upper strata just before the final incursion of the 

 Catskill deposits. 



Williams, Henry S. Description of Prestwicbia eriensis. Geol. 

 Mag., September, 1885. (Amer. Nat., vol. xx, p. 157, February, 

 1886. Philadelphia.) 

 Notice of. 



Williams, Henry S. {See Dames; Davis, W. M. ; Kayser; Noet- 

 ling.) 



Williams, Herbert Upham. Notes on the Fossil Fishes of the Gene- 

 see and Portage Black Shales. (Bull. Buffalo Soc. Nat. Sci., vol. v, 

 pp. 81-84, pi. on p. 81. 1880. Buffalo.) 



Gives a short account of the fossil remains of fishes found in the Genesee and 

 Portage black shales or their equivalents, with .i few original observa- 

 tions, and describes two new species, Palwoniscus reticulatmi and P. antiquus 



Williams, Herbert Upham. {See Mixer, Fred. K.) 



Williams, S. G. Westwar I Extension of Rocks in the Lower Hel- 



derberg period in New York. Abstract. (Proc. A. A. A. S., vol. 



xxxiv, part 1, pp. 235, 236. 1886. Salem.) 



Mentions the occurrence of Lower Helderberg beds and fossils on Cayuga Lake, 

 at the outlet of Skanea teles Laka and at Oriskany Falls. 



Williams, S. G The Westward Extension of Rocks of Lower Hel- 

 derberg Age in New York. (Amer. Jour. Sci., 3d ser., vol. xxxi, pp. 

 139-145, February, 1886. New Haven.) 



Mentions the occurrence of many fossils. The author thinks it would not be 

 difficult to conceive why the Lower Helderberg should thin to the west- 

 ward where the Salina appears iu greatest volume, nor why it should there 

 be represented by impure limestones, resembling the lowest portion of the 

 eastern series, while more nearly synchronous with its higher portions. It 

 would also be natural to expect, in this case, that the fauna of the western 

 strata would consist of forms migrating from the east, and on this account, 

 partaking largely of the life characters of the lower eastern deposits, since 

 such migrations are likely to take place very slowly. 



Williams, S. G. The Westward Extension of Rocks of Lower Hel- 

 derberg Age in New York. Amer. Jour. Sci., February. (Amer. 

 Nat., vol. xx, p. 372, April, 1886. Philadelphia.) 

 Brief abstract of. 



Williams, S. G. {See Davis, W. M.) 



WiNCHELL, N. H. Notice of Lingula and Paradoxides from the red 

 quartzites of Minnesota. Abstract. (Proc. A. A. A. S., vol. xxxiv, 

 part 1, pp. 214, 1886. Salem.) 



Merely calls attention to the discovery of the fossils mentioned. 

 WiNCHELL, N. H. The Taconic Controversy iu a nutshell. (Science, 

 vol. VII, No. 153, p. 34, January, 1886. New York. 

 A plea in favor of the use of the term "Taconic," 



