weeks] PALEONTOLOGY, PETEOLOGY, AND MINEEALOGY, 1901. 41 
302 Gould (Charles Newton). On the southern extension of the 
Marion and Wellington formations. 
Kans. Acad. Sea., Trans., vol. 17, pp. 179-181, 1901. 
Describes their character and occurrence in Oklahoma. 
3< >3 The Oklahoma salt plains. 
Kans. Acad. Sci., Trans., vol. 17, pp. 181-184, 1901. 
Describes the geologic formations of the region and the occurrence and 
character of the salt plains. 
304 Oklahoma limestones. 
Stone, vol. 23, pp. 351-354, 1901. 
Contains notes on the occurrence and character of the limestones. 
305 and Fisher (C. A.). The Dakota and Carboniferous clays of 
Nebraska. 
Nebr. Board of Auric., Ann. Kept, 1900, pp. 185-194. (Not seen.) 
3(>6 G-rabau (Amadeus W.). Guide to the geologjp and paleontology 
of Niagara Falls and vicinity. 
Buffalo Soc. Nat. Sci. Bull., vol. 7, pp. 1-284, 18 pis., 190 figs., and 
geologic map; N. Y. State Mus., Bull. No. 45, pp. 1-284, 18 pis., 190 
figs, and geologic map, 1901; Review, Am. Geol., vol. 28, pp. 56-57, 1901. 
Describes the physiography of the region, the character, occurrence, 
and distribution of the Silurian and Devonian strata, and the fossils of 
the Silurian rocks. Includes a bibliography. 
307 A preliminary geologic section in Alpena and Presque Isle 
Counties, Michigan. 
Am. Geol., vol. 28, pp. 177-189, pi. 20, 1901. 
Gives a section of a well 1,250 ft. in depth and describes the char- 
acter and occurrence of the Devonian strata of the section exposed. 
308 Recent contributions to the problem of Niagara. 
Abstract: Science, new ser., vol. 14, p. 773, 1901; N. Y. Acad. Sci., 
Annals, vol. 14, p. 139, 1901; Am. Geol., vol. 28, pp. 329-330, 1901. 
Contains abstract of paper read before the New York Academy of 
Sciences. 
309 Granger (Walter), Osborn (Henry F.) and. Fore and hind limbs 
of Sauropoda from the Bone Cabin quarry [Wyoming]. 
See Osborn (H. F.) and Granger (W.), 585. 
310 Grant (C. C). Opening address. Geological Section [Hamilton 
Scientific Association]. 
Hamilton Sci. Assoc, Jour. & Proc. No. 17, pp. 62-77, 2 figs., 1901. 
Contains notes on fossils collected near Hamilton, Ontario. 
311 Niagara Falls as an index of time. 
Hamilton Sci. Assoc, Jour. & Proc No. 17, pp. 78-83, 1 fig., 1901. 
312 Geological notes, etc. 
Hamilton Sci. Assoc., Jour. & Proc No. 17, pp. 84-96, 1 fig., 1901. 
Discusses certain post-glacial problems. 
