weeks.] PALEONTOLOGY, PETROLOGY, A^D MINERALOGY, 1901. 89 
809a White (David). Two new species of Algae from the Upper Silu- 
rian of Indiana. 
U. S. Nat. Mus., Proa, vol. 24, pp. 265-270, pis. xvi-xviii, 1001 
810 Age of the coals at Tipton, Blair County, Pennsylvania. 
Geol. Soc. Am., Bull., vol. 12, pp. 473-477, 1901. 
Describes the occurrence, character and structure of the strata associ- 
ated with the coals and discusses their age as indicated by the fossil flora. 
811 [Review of "Etude sur la flore fossile du basin houiller 
d'Heraclee (Asie Mineure)" by R. Zeiller.] 
Jour. Geol., vol. 9, pp. 192-198, 1901. 
812 Mr. Lacoe's relation to science. 
Wyoming Hist, and Geol. Soc, Proc. and Coll., vol. 6, pp. 55-00, 1901. 
Gives an account of his geologic and paleontologic labors. 
813 The Canadian species of the genus Whittleseya and their sys- 
tematic relations. 
Ottawa Nat., vol. 15, pp. 98-110, pi. 7, 1901. 
Describes the occurrence, relation, systematic position and characters 
of the species. 
814 Some paleobotanical aspects of the Upper Paleozoic in Nova 
Scotia. 
Can. Rec. Sci., vol. 8, pp. 271-280, 1901. 
Discusses the bearing of the paleobotanical data on the age of certain 
beds in Nova Scotia. 
815 White (I. C). Second edition of the geological map of West 
Virginia. 
Am. Geol., vol. 28, pp. 323-329, 1901. 
Gives a brief description of the map. 
816 Geology of West Virginia. [Paper read before the Interna- 
tional Mining Congress, Boise, Idaho, June, 1901.] 
Mines and Minerals, vol. 22, pp. 153-155, 1901. 
Describes briefly the character and succession of the sedimentary 
strata of the State. 
817 White (Mark). Geology of the Glass Mountains of western 
Oklahoma. 
Kans. Acad. Sci., Trans., vol. 17, pp. 199-200, 1901. 
Gives a section of the Cretaceous strata. 
818 White (Theodore G.). [Faunas of the Lower Ordovician at Glens 
Falls, N. Y.] 
Abstract: Am. Geol., vol. 27, p. 43 ($ p.), 1901. 
Gives results of the author's detailed studies. 
819 Whiteaves (J. F.). Description of a new species of Unio from 
the Cretaceous rocks of the Nanaimo coal field. Vancouver 
Island. 
Ottawa Nat., vol. 14, pp. 177-179, 1 fig., 1901. 
