NORTH AMERICAN TAL^EONTOLOGY. 273 



ShalerJ N. S. — Continued, 

 the U. S. Geol. Survey. (Amer. Jour. Sci.. vol. xxxii, pp. 35-60, 

 figs. 1-13, July, 188G. Xew Haven ) 



Fossiliferous Horizons of the Cobscook Series. The author gives several lists 

 of species, and considers that he has horizons corresponding to the Lower 

 Helderberg, Clinton, and Niagara groups of New York, and the dark Dev- 

 onian Ohio shale of the Kentucky Geological Survey. 



Shaler, N. S. Preliminary Report on the geology of the Cobscook Bay 

 district, Maine. (Nature, vol. xxxiv, p. 330, 188G. London and Kew 

 York.) 



Notice of. See American Journal of Science, .July. 



Smith, Aubrey H. The Eailway Cutting at Gray's Ferry Road. (Proc. 

 Acad. Nat. Sci., vol. — , pi). 253, 254, September, 188G. Philadel- 

 phia.) 



Describes a bed of blue clay on the Schuylkill River, containing numerous gen- 

 era and species of diatoms and several species of recent woods, and exhib- 

 ited a specimen of wood, probably of a white cedar, Ciqyressus Ihyoides. 

 This tree until verj'^ recently was common along the Schuylkill and Dela- 

 ware, and isolated specimens may still exist there. The wood now showu 

 is in no degree mineralized, and but slightly decomposed. This blue clay 

 occurs at a depth of 25 feet through yellow clays and river gravels. 



Smith, Edgar. (*SVeLamplugh, G. W.) 



Spencer, J. W. Niagara Fossils. (Trans. St. Louis Acad. Sci., vol. 

 IV, No. 4, 1878-'8G, pp. 555-G24, pis. i-ix, 188G. St. Louis.) 



A reprint of the article published in the Bull. Mus. Univ., State of Missouri, pji. 

 1-Gl, St. Louis, 1884. 



Springer, Frank. {See Carpenter, P. Herbert.) 



Steinmann. Charles A. White : On the Mesozoic and Cenozoin Pa- 

 leontology of California. Bull. U. S. Geol. Survey, No. 15, 1885, 33 S. 

 (Neu. Jahrb. Miu., Geol. u. Pal., 1886, Bd. ii, pp. 110-112, Stuttgart.) 

 Abstract. 



Steinmann. Charles A. White : On New Cretaceous Fossils from Cali- 

 fornia. Bull. TJ. S. Geol. Survey, No. 22, vol. ill, 25 S., 5 tafeln. 

 Washington, 1885. (Neu. Jahrb. Min., Geol. u.Pal., Bd. ii, pp. 112- 

 113, 1886. Stuttgart.) 

 Abstract. 



Steinmann. H. A. Nicholson and A. H. Ford : On the Genus Fistu- 

 lipora, McCoy, with descriptions of several species. Ann. & Mag. 

 Nat. Hist., ser. 5, vol. xvi, ])p, 496-517, t. xv-xviii, and 6 Holz- 

 schnitte, 1885. (Neu. Jahrb. Min., Geol. u. Pal., Bd. ii, pp. 133, 134, 

 1886. Stuttgart.) 



Abstract. 



Steinmann. H. A. Nicholson and R. Etheridge, jun. : On the Synon- 

 omy. Structure, and Geological Distribution of Solenopora compacta 

 Billings Si). Geol. Mag. Dec. iii., vol. ii.. No. 12, p]). i-xiii and 

 H. Mis. 600 18 



