weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1898. 99 
870 White (David). Omphaloploios, a new Lepidodendroid type. 
Geol. Soc. Am., Bull., vol. ix, pp. 329-342, pis. 20-23; Abstract, Science, 
new ser., vol. vii, p. 80 (10 1.), 1898. 
Describes material from the Lower Coal Measures of Missouri and 
the characters of Lepidodendron cyclostigma. 
871 The probable age of the McAlister coal group. 
Science, new ser., vol. vii, p. 612 (^ p.), 1898. 
Contains summary of paper read before the Geological Society of 
Washington. 
'.-i ■ 
872 and Schuchert (Charles). Cretaceous series of the west 
coast of Greenland. 
Geol. Soc. Am., Bull., vol. ix, pp. 343-368, pis. 24-26; Abstract, Science, 
new ser., vol. vii, pp. 52-53 (| p.); Review, Nat. ScL, vol. xiii, pp. 
230-232, 1898. 
Describes the general geologic features of the region and gives lists 
of fossils collected from the various localities. 
873 White (I. C). The Pittsburg coal bed. 
Am. Assoc. Adv. Sci., Proc, vol. xlvi, pp. 187-198; Am. Geol., vol. xxi, 
pp. 49-60; Review, Zeit. fur prak. Geol., 1898, heft 7, pp. 250-251, 1898. 
Discusses the age of the coal bed and describes its structure and the 
Tithologic character of the associated strata. 
874 White (Theodore G.). A contribution to the petrography of the 
Boston Basin [Massachusetts]. 
Boston Soc. Nat. Hist., Proc, vol. xxvii, pp. 117-156, 5 pis., 1897. 
See Bibliography and Index for 1897, No. 686. 
875 Whiteaves (J. F.). On some fossil cephalopods in the Museum of 
the Geological Survey of Canada, with descriptions of eight 
new species that appear to be new. From the Cambro- 
Silurian rocks of the Provinces of Quebec, Ontario, and 
Manitoba. 
Ottawa Nat., vol. xii, pp. 116-127, 1898. 
876 Note on a fish tooth from the Upper Arisaig series of Nova 
Scotia. 
Brit. Assoc. Adv. Sci., Report 1897, pp. 656-657, 1898. 
Discusses its bearing on the age of the beds. 
877 Whitfield (R. P.). Assisted by E. O. Hovey. Catalogue of the 
type and figured specimens in the paleontological collections 
of the geological dex)artment, American Museum of Natural 
History. 
Am. Mus. Nat. Hist., Bull., vol. xi, pp. i-vii, 1-71, 1898. 
878 Observations on the genus Barretia. 
Abstract, Am. Assoc. Adv. Sci., Proc, vol. xlvi, p. 200 (8 1.), 1898. 
See Bibliography and Index for 1897, No. 693. 
