BIBLIOGRAPHY OF N. H. WINCH ELL 87 



of the International Geological Congress. March, 1887. Am. Nat., 

 vol. xxi, pp. 693-700. 1887. 

 The iron-bearing formations of northeastern Minnesota. Bull. Minn. 

 Acad. Sci., vol. iii, pp. 168-169. 1887. 

 ISSS. The sixteenth annual report of the Geological and Natural History 

 Survey of Minnesota for 1887. 504 pp. 8vo. St. Paul, 1888. Thi.s 

 report contains : 



The original Huronian, pp. 13-40. 

 The Marquette and Gogebic iron regions, pp. 40-60. 

 Grand Marais, Gunflint Lake, Tower, etc. (ai-eal study of geology 

 of northeastern Minnesota ) , pp. 60-129. 

 The Geology of Minnesota ; volume II of the final report of the Geo- 

 logical and Natural History Survey of Minnesota. 695 pp. 4to; 42 

 plates and 32 figures. St. Paul, 1888. This report contains : 



The geology of Wabasha, Goodhue, Dakota, Hennepin, Ramsey, 



and Washington counties, pp. 1-101, 264-398. The chief feature 



of the volume is the final discussion of the recession of the 



Falls of St. Anthony, with illustrations showing their position 



from the time of their discovery by Hennepin to 1857. 



The Animikie black slates and quartzites and the Ogishke coiigloni- 



erate of Minnesota the equivalent of the "Original Huronian/' .\iii. 



Geol., vol. i, pp. 11-14. 1888. 



Irving and Chamberlin on the Lake Superior sandstones. Am. Geol., 



vol. i, pp. 44-51. 1888. 

 Some objections to the word Taconic considered. Am. Geol., vol. 1. pp. 



162-172. 1888. 

 A great primordial quartzite. Am. Geol., vol. i, pp. 173-178. 1888. 

 The proposed Geological Society (with C. H. Hitchcock). Am. Geol., 



vol. i, pp. 394-395. 1888. 

 Report of the subcommittee on the Lower Paleozoic. Presented for the 

 American committee to the International Congress of Geologists, Lon- 

 don session, 1888. Am. Geol., vol. ii, pp. 193-224. 1888. 

 Some thoughts on eruptive rocks, with special reference to those of 

 Minnesota. Proc. Am. Assoc. Adv. Sci., vol. xxxvii, pp. 212-221. 1888. 

 1889. The seventeenth annual report of the Geological and Natural History 

 Survey of Minnesota for 1888. 273 pp. 8vo. St. Paul, 1889. This 

 report contains : 



General report of progress made in the study of the crystalline 

 rocks of Minnesota, pp. 5-74. 

 The history of geological surveys in Minnesota. Bull. 1, Geol. and Nat. 



Hist. Surv. Minn. 37 pp. 8vo. St. Paul. 1889. 

 Natural gas in Minnesota. Bull. 5, Geol. and Nat. Hist. Surv. Minn. 



39 pp. 8vo. St. Paul, 1889. 

 Exhaustion of anthracite coal. ,\ra. Geol., \o\. iii, pp. 45-48. 1889. 

 A now glacial theory. Am. Geol., vol. iii. iip. 138-140. 1889. 

 Geological Society of America. Am. (Jcol.. vol. iii, pp. 140-146. 1SS9. 

 Natural science at the University of Minnesota. Am. Geol.. vol. iii, pp. 



165-169. 1889. 

 The origiji of jtrairics. .\m. Geol., vol. iii, pp- 182-1.8.3. 1889. 



