walcott. J LITERATURE. 47 



Lane, Alfred C. The geology of Nahant. Boston Society Nat. Hist., Proc., vol. 



21, 1889, pp. 91-95. 

 Matthew, G. F. How is the Cambrian divided? A plea for the classification of 



Salter and Hicks, Am. Geologist, vol. 4, 1889, pp. 139-148. 

 . On the classification of the Cambrian rocks in Acadia. Supplementary 



note. Canadian Record Science, vol. 3, 1889, pp. 303-315, 371, 372. 

 . On the Cambrian organisms in Acadia. Canadian Rec. Sci., vol. 3, 1889, pp. 



383-387. 

 McConnell, R. G. Notes on the geology of Mount Stephen, British Columbia. 



American Geologist, vol. 3, 1889, pp. 22-25. 

 Meads, A. D. The Stillwater deep well. American Geologist, vol. 3, 1889, pp. 342, 



343. 

 Nicholson, H. A., and R. Lydekker. A manual of paleontology for the use of stu- 

 dents with a general introduction on the principles of paleoutology. 3d 



edition, 2 vols. Edinburgh and London, 1889. 

 Rand, T. D. A discussion on the rocks of Pennsylvania and New York. New York 



Acad. Sci. Trans., vol. 8, 1889, pp. 47-51.' 

 Shaler, N. S. The geology of the island of Mount Desert, Maine. 8th Ann. Rep. 



U. S. Geol. Survey,' part 2, 1889, pp. 987-1061. 

 Walcott, C. D. Stratigraphic position of the Olenellus fauna in North America and 



Europe. Am. Jour. Sci., 3d ser., vol. 37, pp. 374-392; vol. 38, 1889, pp. 29-42. 

 . Descriptive notes of new genera and species of the Lower Cambrian or 



Olenellus zone of North America. U. S. National Museum, Proc, vol. 12, 



1889, pp. 33-46. 



. Descriptions of new genera and species of fossilsfrom the Middle Cambrian. 



U. S. National Museum, Proc, vol. 11, 1889, pp. 441-446. 

 Winchell, N. H. The crystalline rocks of Minnesota. General report of progress 



made in the study of their field relations. Statement of problems yet to be 



solved. Geol. and Nat. Hist. Survey of Minn. 17th Ann. Rep. for 1888, 1889, 



pp. 5-74. 



1890. 



Comstock, Theo. B. A preliminary report on the geology of the central mineral 

 region of Texas. 1st Ann. Rep. Geol. Surv. of Texas for 1889, 1890, pp. 

 239-391. 



Dana, J. D. Sedgwick and Murchison ; Cambrian and Silurian. Am. Jour. Sci., 

 3d ser., vol. 39, 1890, pp. 167-180. 



. Areas of continental progress in North America and the influence of the con- 

 ditions of these areas on the work carried forward within them. Geol. Soc 

 America, Bull., vol. 1, 1890, pp. 36-48. 



Etheridge, R., jr. On some Australian species of the family ArchseocyathinaB. 

 Trans. Roy. Soc. South Australia, vol. 13, 1890, pp. 10-22. 



Gilbert, G. K. Lake Bonneville. Monographs U. S. Geol. Survev, vol. 1, 1890, pp. 

 438. 



Hitchcock, C. H. Maine, New Hampshire, Vermont, Rhode Island, and Connecti- 

 cut. (Geological formations.) Macfarlane's Am. Geol. R. R. Guide, 2ded., 



1890, p. 86. 



Matthew, G. F. On Cambrian organisms in Acadia. Roy. Soc. Canada Trans., vol. 



7, Proc , sec. iv, 1890, pp. 135-162. 

 MpGEE, W J. The southern extension of the Appomattox formation. Am. Jour. 



Sci., 3d ser., vol. 40, 1890, pp. 15-41. 

 Peale, A. C. Report of Dr. A. C. Peale (on the Montana division of geology). U. 



S. Geol. Surv., 10th Ann. Rep., 1890, pp. 130-132. 

 Sears, John H. The stratified rocks of Essex Connty (Massachusetts). Essex Ii 



stitute, Bull., vol. 22, 1890, pp. 31-47 (separate, pp. 17). 

 Walcott, CD. A review of Dr. R. W. Ells's second report on the geology of a 



portion of the province of Quebec ; with additional notes on the " Quebec 



group." Am. Jour. Sci., 3d ser., vol. 39, 1890, pp. 101-115. 

 Description, of new forms of Upper Cambrian fossils. U. S. National Museum, 



Proc, vol. 13, 1890, pp. 267-279. 

 The fauna of the Lower Cambrian or Olenellus zone. 10th Ann. Rept. U. S. 



Geological Survey, Part I, 1890, pp. 509-763, pis. 49-98. 

 Winchell, N. H., and H. V. Winchell. The Taconic iron ores of Minnesota and 



ot western New England. Am. Geologist, vol. 6, 1890, pp. 263-274. 



1891. 



Gkiger, H. R., and Arthur Keith. The structure of the Blue Ridge near Harper's 

 Ferrv. Bull. Geol. Soc. America, vol. 2, 1891, pp. 155-164. 



Hayes, C. Willap.d. The overthrust faults of the southern Appalachians. Bull. 

 Geol. Soc America, Vol. 2, February, 1891, pp. 141-154. 



