412 C. R. Stauffer — The Minnesota Devonian. 



KEFERENCES. 



(1) Geological Survey of Minnesota, vol. I, 1884, pp. 303-307; 357-361. 



(2) Idem, vol. I, 1884, p. 384; vol. II, 1888, p. 184. 



(3) Idem, vol. I, pp. 353-356. 



(4) Idem, vol. I, p. 385. 



(5) Idem, vol. I, p. 460. 



(6) Iowa Geological Survey, vol. XIII, 1903, pp. 268-279. 



(7) Contributions to Canadian Paleontology, vol. I, pt. 4, 1892, pp. 255- 

 359, pis. 23-47. 



(8) Idem, pt, 3, 1891, p. 249. 



(9) Eef erred to by Sehuchert in IT. S. G. S., Bull. 87, p. 417. 



(10) Op. cit. pp. 247-250. 



(11) Idem, p. 251. 



(12) Bull. -Am. Assoc. Petroleum Geologists, vol. 4, No. 3, 1920, pp. 255- 

 261. 



(13) IT. S. G. S., Monograph VIII, pp. 4-8, 1884. 



(14) Idem, pp. 99-211: 274-278; 2S1-285 ; and pis. II-VII; XIII-XVII. 



University of Minnesota, Minneapolis. 



