724 



NORTH AMERICAN INDEX FOSSILS. 



1889 Whitfield, R. P. Observations 

 on some imperfectly known fossils 

 from the Calciferous sandrock of 

 Lake Champlain. Am. Mus. Nat. 

 Hist. Bull. 2 : 41-63, plates. 



1890 The Fort Cassin, Vermont 



rocks and their fauna. Ibid. 3 : 25- 

 39, plates; G. S. A. Bull, i : 514-515. 



1890 Brainerd, E., and Seely, H. M. 

 The Calciferous formations in the 

 Champlain Valley. Am. Mus. Nat. 

 Hist. Bull. 3 : 1-23 ; G. S. A. I : 501- 

 511- 



1892 Dale, T. N. On the structure 

 and age of the Stockbridge limestone 

 in the Vermont Valley. Abst. : G. S. 

 A. Bull. 3 : S14-519. 



1893 The Rensselaer Grit pla- 

 teau in New York. U. S. G. S. Ann. 

 Kept. 13, pt. 2, pp. 297-340. 



1893 Matthew, W. D. On antennae 

 and other appendages of Triarthrus 

 beckii. A. J. S. (3), 46: 121-125. 



1896 White, T. G. The original Tren- 

 ton rocks [N. Y.]. Ibid. (4), 2 : 430- 

 432. 



1896 The faunas of the upper 



Ordovician strata at Trenton Falls, 

 N. Y. N. Y. Acad. Sci. Trans. 15: 

 71-96. 



1896 Ami, H. M. Notes on some fos- 

 sils from the Trenton of Highgate 

 Springs, Vermont. Ottawa Nat. 9 : 

 215-216. 



1897 Whitfield, R. P. Description of 

 new species of Silurian fossils from 

 near Ft. Cassin [Vt.] and elsewhere 

 on Lake Champlain. Am. Mus. Nat. 

 Hist. Bull. 9: 177-184, plates. 



1897 Prosser, C. S., and Cumings, E. 

 R. Sections and thickness of the 

 Lower Silurian formations on West 

 Canada Creek and in the Mohawk 

 Valley [N. Y.]. N. Y. Ann. Rept. 

 State geologist 15, pt. i, pp. 23-24; 

 616-659, plates. 



1899 White, T. G. Report on the re- 

 lations of the Ordovician and eo- 

 Silurian rocks in portions of Herki- 

 mer, Oneida and Lewis counties [N. 



Y.] N.Y. State Mus., Ann. Rept. 51, 

 pt. I, pp. r23-r54, figs. 

 1900 Cleland, H. F. The Calciferous 

 of the Mohawk Valley [N. Y.]. Am. 

 Pal. Bull. 3, no. 13, pp. 5-26. 



1900 Cumings, E. R. Lower Silurian 

 system of eastern Montgomery Coun- 

 ty, N. Y. N. Y. State Mus. Bull. 7, 

 no. 34, pp. 419-468. 



1 90 1 Ruedemann, R. Hudson River 

 beds near Albany and their taxonomic 

 equivalents. Ibid. 42 : 489-587, plates. 



1 90 1 Trenton conglomerate of 



Rysedorph Hill, Rensselaer County 

 and its fauna. Ibid. 49: 3-1 14, 

 plates. 



1901 Dwight, W. B. Fort Cassin beds 

 in the Calciferous limestone of 

 Dutchess County, N. Y. Abst. : G. 

 S. A. Bull. 12: 490-491. 



1901 White, T. G. [Faunas of the 

 lower Ordovician at Glens Fall, N. 

 Y.] Abst. : Am. Geol. 27 : 43. 



1902 Ruedemann, R. The graptolite 

 (Levis) facies of the Beekmantown 

 formation in Rensselaer County, N. 

 Y. N. Y. State Mus. Bull. 52 : 546- 

 575, plate. 



1902 Cumings, E. R. Lower Silurian 

 system of eastern Montgomery Coun- 

 ty, N. Y. Ibid., Bull. 34: 418-468, 

 plates. 



1902 Prosser, C. S. Notes on the 

 stratigraphy of the Mohawk Valley 

 and Saratoga County [N. Y.]. Ibid. 

 34: 469-482. 



1902 Seely, H. M. Some sponges of 

 the Chazy formation [Vt. and N. Y.]. 

 Vt. Geol. Surv., Rept. State geologist 

 III., pp. 151-161, plates. 



1902 Raymond, P. E. The Crown 

 Point section [N. Y.]. Am. Pal. 

 Bull. 14: 3-44, plates. 



1903 • The faunas of the Tren- 

 ton at the type section and at New- 

 port, N. Y. Ibid. 17: 13-26. 



1903 Cleland, H. F. Further notes on 

 the Calciferous (Beekmantown) for- 

 mation of the Mohawk Valley, with 



