854 INDEX TO THE STRATIGRAPHY OF NORTH AMERICA. 



513. Kummel, H. B., Geological section of New Jersey: Jour. Geology, vol. 17, 1909, pp. 354-355; (a) pp. 355-356; 



(b) pp. 356-360; (c) pp. 360-365. 



514. Lane, A. C, Suggestion from the State geologist: Michigan Miner, vol. 3, No. 10, 1901, p. 9. 



516. Northern Interior coal field: Twenty-second Ann. Kept. U. S. Geol. Survey, pt. 3, 1902, p. 315; (a) p. 316. 



516. Coal of Michigan. Geol. Survey Michigan, vol. 8, pt. 1, 1902, pp. 42-47; (a) p. 143. 



517. Notes on the geological section of Michigan, part 2: Jour. Geology, vol. 18, 1910, pp. 393-429; (a) p. 414; 



(b) p. 416; (c) p. 417. 



518. Lane, A. C, and others. Nomenclature and subdivision of the upper Siluric strata of Michigan, Ohio, and 



western New York: Bull. Geol. Soc. America, vol. 19, 1909, pp. 553-556. 

 619. Lane, A. C, and Seaman, A. E., Notes on the geological section of Michigan: Tenth Ann. Eept. State Geol- 

 ogist for 1908, 1909, pp. 21-120; (a) opp. p. 42; (b) pp. 74-75; (c) p. 76; (d) pp. 79-80; (e) p. 80; (f) p. 83; 

 (g) p. 84; (h) p. 87. 



520. Langdon, D. W., jr., Variations in the Cretaceous and Tertiary strata of Alabama: Bull. Geol. Soc. America, 



vol. 2, 1891, pp. 587-606. 



521. Lapworth, Charles, Preliminary report on some graptolites from the lower Paleozoic: Trans. Royal Soc. 



Canada, vol. 4, sec. 4, 1887, pp. 167-184. 



522. in Report on geology of Eastern Townships, by R. W. Ells: Ann. Rept. Geol. Survey Canada, new ser., 



vol. 2, 1887, p. 16 J. 



523. Dease River, British Columbia, Note on graptolites: Ann. Rept. Geol. Survey Canada, new ser., vol. 3, 



1889, pp. 94-95 B. 



524. Lawson, A. C, Geology of the San Francisco Peninsula: Fifteenth Ann. Rept. U. S. Geol. Survey, 1895, p. 416. 



525. Geological section of the Middle Coast Ranges of California: Bull. Geol. Soc. America, vol. 13, 1902, 



pp. 544-545. 



526. Leach, W. W., Crows Nest coal fields: Ann. Rept. Geol. Survey Canada, new ser., vol. 14, 1901, p. 74 A. 



527. Telkwa River and vicinity, British Columbia: Rept. Geol. Survey Canada, 1907, pp. 10-12. 



528. Lee, W. T., Red Beds of the Rio Grande region in central New Mexico: Jour. Geology, vol. 15, 1907, p. 55; 



(a) pp. 52-58. 



529. Unconformity in the so-called Laramie of the Raton coal field. New Mexico: Bull. Geol. Soc. America, 



vol. 20, 1909, pp. 357-368. 



530. The Grand Mesa coal field, Colorado; Bull. U. S. G(?ol. Survey No. 341, 1909, pp. 320-321; (a) pp. 316, 320. 



531. Lees, J. H., General section of the Des Moines stage of Iowa: Ann. Rept. Iowa Geol. Survey, vol. 19, 1909, 



pp. 599-600. 



532. Leonard, A. G., Topographic features and geological formations of JS'orth Dakota: Third Biennial Rept. Geol. 



Survey North Dakota, 1904, pp. 143-172. 



533. The Cretaceous and Tertiary formations of western North Dakota and eastern Montana: Jour. Geology, 



vol. 19, 1911, pp. 507-547. 



534. Leonard, A. G., and Smith, C. D., Sentinel Butte lignite field. North Dakota and Montana: Bull. U. S. Geol. 



Survey No. 341, 1909, p. 21. 



535. Lesley, J. P., A summary description of the geology of Pennsylvania: Summary Rept. Geol. Survey Penn- 



sylvania, vol. 1, 1892, pp. 625-718; vol. 2, 1892, pp. 721-875, 989-1033; (a) vol. 2, p. 787. 



536. Lindgfren, Waldemar, Notes on the geology of Baja California, Mexico: Proc. California Acad. Sci., 2d ser., 



vol. 1, 1889, pp. 180-196. 



537. Mining districts of the Idaho Basin and Boise Ridge, Idaho, with report on fossil plants of the Payette 



formation by F. H. Knowlton: Eighteenth Ann. Rept. U. S. Geol. Survey, pt. 3, 1898, pp. 632-634, 721-736, 

 Pis. XGIX-CII. 



538. Colfax folio (No. 66), Geol. Atlas U. S., U. S. Geol. Survey, 1900. 



539. Gold and silver veins of Silver City, De Lamar, and other mining districts, Idaho: Twentieth Ann. Rept. 



U. S. Geol. Survey, pt. 3, 1900, pp. 93-99. 



540. Gold belt of the Blue Mountains of Oregon: Twenty-second Ann. Rept. IT. S. Geol. Survey, pt. 2, 1901, 



pp. 577-579; (a) pp. 580-581. 



541. Copper deposits of the Clifton-Morenci district, Arizona: Prof. Paper U. S. Geol. Survey No. 43, 1905; 



(a) p. 65; (b) pp. 69-72. 



542. Lindgren, Waldemar, Graton, L. C, and Gordon, C. H., Ore deposits of New Mexico: Prof. Paper U. S. 



Geol. Survey No. 68, 1910; (a) pp. 29-30; (b) p. 30; (c) pp. 30-31; (d) pp. 31-32. 



543. Logan, W. E., Report of Progress, 1845-i6, Geol. Survey Canada, 1847, pp. 69-70. 



544. Geology of Canada, report of progress from its commencement to 1863 (1863), pp. 87-122; (a) pp. 123-224; 



(b) pp. 134-135; (c) p. 164; (d) pp. 176-194; (e) p. 196; (f) pp. 221-224; (g) pp. 225-229; (h) p. 234; (i) 

 pp. 259-271; (j) p. 267; (k) pp. 269-271; (1) pp. 288-290, 864-880; (m) pp. 298-305; (n) pp. 334-336; (o) 

 pp. 336-355; (p) pp. 359-389; (q) pp. 387-388; (r) pp. 390^04; (s) pp. 406-410; (t) pp. 420-425; (u) p. 442; 

 (v) pp. 446-453; (w) p. 844; (x) pp. 845-846; (y) pp. 865-869; (z) pp. 871,290-291. 



645. On a part of the Pictou coal field: Rept. Progress 1866-1869, Geol. Survey Canada, 1870, pp. 13-15. 



546. Loomis, F. B., Origin of the Wasatch deposits: Am. Jour. Sci., 4th ser., vol. 23, 1907, pp. 356-364. 



