NO. 12 CHARLES DOOLITTLE WALCOTT 25 



1886. Description of a Pteropod from the Upper Cambrian. Bull. U. S. Geol. 



Surv. No. 30, 1886, pp. 223-225, pis. XXXII-XXXIII. 

 1886. Report on the Department of Invertebrate Fossils (Paleozoic) in the 



U. S. National Museum, 1885. Ann. Rep. Smithsonian Inst. 1885, Pt. 2, 



1886, pp. 129-132. 



1886. Cambrian age of the roofing slates of Granville, Washington Co., N. Y. 



Advanced print, Salem Press, December, 1886. Proc. Amer. Assoc. 

 Adv. Sci., Vol. XXXV, Jan., 1887, pp. 220-221. 



1887. The Taconic System. Amer. Journ. Sci., 3d Ser., Vol. XXXIII, Feb , 



1887, pp. 153-154- 



1887. Note on the genus Archeocyathus of Billings. Amer. Journ. Sci., 3d Ser., 



Vol. XXXIV, Aug., 1887, pp. 14S-146. 

 1887. Fauna of the "Upper Taconic" of Emmons, in Washington County, 



N. Y. Amer. Journ. Sci., 3d Ser., Vol. XXXIV, Sept., 1887, pp. 187- 



199, pi. I. 

 1887. Section of Lower Silurian (Ordovician) and Cambrian strata in central 



New York, as shown by a deep well near Utica. Advanced print, 



Salem Press, Dec, 1887. Proc. Amer. Assoc. Adv. Sci., Vol. XXXVI, 



March, 1888, pp. 211-212. 



1887. Discovery of fossils in the Lower Taconic of Emmons. Advanced print, 



Salem Press, Dec, 1887. Proc. Amer. Assoc Adv. Sci., Vol. XXXVI, 

 March, 1888, pp. 212-213. 



1888. The Taconic System of Emmons, and the use of the name Taconic in 



geologic nomenclature. Amer. Journ. Sci., 3d Ser., Vol. XXXV, 



March, 1888, pp. 229-242, figs. 1-9; Apr., 1888, pp. 307-327, figs. 10-13: 



May, 1888, pp. 394-401, pi. III. 

 1888. Cambrian fossils from Mount Stephens, Northwest Territory of Canada. 



Amer. Journ. Sci., 3d Ser., Vol. XXXVI, Sept., 1888, pp. 161-166. 

 1888. Synopsis of conclusions of Mr. C. D. Walcott on the " Taconic System 



of Emmons." Amer. Geol., Vol. II, No. 3, Sept., 1888, pp. 215-219. 



Congres Geol. Intern., Compte rendu, 4me sess., Londres, 1888, 1891, 



App. A, pp. A 111-115. 

 1888. Report of Mr. C. D. Walcott, in Administrative reports of chiefs of 



divisions. 7th Ann. Rep. U. S. Geol. Surv. 1885-1886, 1888, pp. 113-117. 

 1888. The stratigraphical succession of the Cambrian faunas in North America. 



(Abstract of remarks made by Chas. D. Walcott, of the U. S. Geol. 



Surv., before the meeting of the Internat. Geol. Congr. in London, in 



the course of discussion on the Cambrian system, on Sept. 18, 1888.) 



Nature, Vol. 38, No. 988, Oct. 4, 1888, p. 551. 



1888. On the relations and nomenclature of formations between the Archaean 



and Cambrian, and the use of the term Taconic. Congres Geol. In- 

 tern., Compte rendu, 4me sess., Ann. A, Reports of Amer. Comm. 

 1891 [1888], p. A 69. 



1889. Stratigraphic position of the OlcncUus fauna in North America and 



Europe. Amer. Journ. Sci., 3d Ser., Vol. XXXVII, May, 1889, pp. 374- 

 392; Vol. XXXVIII, July, 1889, pp. 29-42. 



1889. Description of new genera and species of fossils from the Middle Cam- 

 brian. Proc. U. S. Nat. Mus. 1888, Vol. XI, 1889, pp. 441-446. 



1889. A simple method of measuring the thickness of inclined strata. Proc. 

 U. S. Nat. Mus. 1888, Vol. XI, 1889, pp. 447-448. 



