BIBLIOGKAPHY OF NORTH AMERICAN CEOLOGY, 1906-1907. 49 
Clerc, F. L. 
506. Ore deposits of the Joplin district.— Colorado Sci. Soc, Proc, vol. 8, 
pp. 199-220, 1906. 
States and discusses the various explanations which have been given of the genesis of 
the zinc and lead ore deposits of the Joplin district, Missouri 
507. The ore deposits of the Joplin region, Missouri.— Am. lust. Min. Eng., 
Bi-Mo. Bull., no. 14, pp. 353-376, March, 1907. 
Discusses the origin and form of the lead and zinc deposits of the Joplin district. 
C»bb, Collier. 
508. Notes on the geology of Currituck Banks [North Carolina].— Elisha 
Mitchell Sci. Soc, Jour., vol. 22, no. 1, pp. 17-19, 1900. 
509. Autophytographs. — Abstract: Elisha Mitchell Sci. Soc. lour., vol. L':2, 
no. 3, p. 58, 1906. 
Defines the term and records occurrences. 
510. Kinetic flora of Moncure shales. — Abstract : Elisha Mitchell Sci. Soc, 
vol. 22, no. 3, p. 60, 1906. 
Notes the occurrence of fossil plants in North Carolina. 
511. Where the wind does the work. — Nat. Geogt Mag., vol. 17, no. 6, pp. 
310-317, 10 figs., June, 1906; Elisha Mitchell Sci. Soc. lour., vol. 22. no. :;. 
pp. 80-85, 1906. 
Describes the shifting of sand on the islands along the coast of North Carolina. 
512. Notes on the geology of Core Bank, N. C. — Elisha Mitchell Sci. Soc. 
Jour., vol. 23, no. 1, pp. 20-28, May, 1907. Abstract : Science, new ser., vol. L'.", 
p. 298, February 22, 1907. 
Cockerell, Theodore Dm Alison. 
513. The publication of rejected names. Science now ser., vol. 17. p. L89, 
1903. 
Discusses the nomenclature of a fossil fruit from Vermont. 
514. The origin of the horse. — Nature, vol. 70, pp. 53-54, 1904. 
515. The snails of New Mexico and Arizona.— Nautilus, vol. 19, no. 6, pp. 
68-71, October, 1905. 
Gives notes upon shells from Pleistocene heds of New Mexico. 
516. A new fossil ant. — Entomological News, vol. 17, no. 1, pp. 27-2S, Janu- 
ary, 1 906. 
Describes Ponera hendersoni n. sp. from Tertiary beds near Florissant, Colo. 
517. A new Tertiary PlanorUs.— Nautilus, vol. 19, no. 9, pp. 100-101, Janu- 
ary, 1906. 
518. Fossil plants from Florissant, Colorado. — Torrey Bot. Club. Bull., vol. 
33, no. 5, pp. 307-312, 6 tigs.. May, 1906. 
519. A fossil water-bug. — Canadian Entomologist, vol. 38, no. 6, p. 209, 
June, 1906. 
Gives a description of Corixa florissantella n. sp. 
520. The fossil fauna and flora of the Florissant (Colorado) shales. 
Colorado Univ., Studies, vol. 3. no. 3, pp. 157-175, 1 pi., 1906. 
Gives an account of the character and occurrence of the fauna, discusses the evidence 
of the fossils as to the age of the deposits, and gives a classified, annotated summary of 
the fauna and flora. The plate contains figures of new species of plants described in the 
Hulletin of the Torrey Botanical Club. 1906. 
521. Fossil Hymenoptera from Florissant. Colorado. Harvard Coll.. Mus. 
Comp. Zool., Bull., vol. 50, no. 2, pp. 33-58, 1906. 
66836— Bull. 372—69 4 
