62 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, [bull. 203. 
530 Matthew (George F.). Preliminary notice of the Etcheminian 
fauna of Cape Breton. 
New Brunswick Nat. Hist. Soc, Bull., vol. 4, pp. 198-208, pis. i-iv, 
1899. 
Abstracts: Am. Jour. Sci., 4th ser., vol. 11, p. 396 (J p.), 1901; Am. 
Geol., vol. 27, p. 49 (£ p.), 1901. 
531 Aero thy ra and Hyolithes — a comparison. 
Can. Roy. Soc, Proc. and Trans., vol. 7, sect. 4, pp. 93-106, 1901. 
(Not seen.) 
Abstract: Science, new ser., vol. 13, p. 1018 (J p.), 1901. 
532 Hyolithes gracilis, and related forms from the Lower Cam- 
brian of the St. John group. 
Can. Roy. Soc, Proc and Trans., vol. 7, sect. 4, pp. 109-111, 1901. 
(Not seen.) 
533 [Devonian of the Acadian provinces.] 
Can. Rec Sci., vol. 8, pp. 344-345, 1901. 
Discusses recent papers by David White. 
534 [Review of "Beitrage zur Kenntniss des Siberischen Cam- 
brium I," by E. von Toll.] 
Am. Geol., vol. 27, pp. 54-56, 1901. 
535 Are the St. John plant beds Carboniferous? 
Am. Geol., vol. 27, pp. 383-386, 1901. 
Discusses the stratigraphic and faunal evidences of the age of the beds. 
536 Les plus anciennes faunes Paleozoiques. 
Int. Cong. Geol., Compte Rendu, viii session, pp. 313-316, 1901. 
Gives a resume of what is known regarding the earliest faunas of east- 
ern Canada. 
537 A backward step in Paleobotany. 
Abstract: Science, new ser., vol. 13, p. 1019 (£ p.), 1901. 
Paper read before the Royal Society of Canada. 
538 Matthew (W. D.). Additional observations on the Creodonta. 
Am. Mus. Nat. Hist., Bull., vol. 14, pp. 1-38, figs. 1-17, 1901. 
Discusses the classification of the group and revision of genera. 
539 Mayer (Alfred Goldsborough). [Review of "The variations of a 
newly arisen species of Medusa."] 
Am. Jour. Sci., 4th ser., vol. 11, p. 473 (£ p.), 1901. 
540 Mead (J. E.). The Flint Hills of Kansas. 
Kans. Acad. Sci., Trans., vol. 17, pp. 207-208, 1901. 
Discusses the origin of these hills. 
541 Memminger (C. G.). Progress in the phosphate mining industry 
of the United States during 1900. 
Min. Ind. for 1900, pp. 513-518, 1901. 
Describes occurrence of phosphate in several States. 
