16 BIBLIOGRAPHY OF NOKTH AMERICAN GEOLOGY, [bull.203. 
34 Babcock (E. J.). Report of the Geological Survey of North Dakota. 
N. D. Geol. Surv., 1st Biennial Rept., 103 pp., 1901. 
Describes the physiographic and geologic features and the character 
and occurrence of clay, coal, and water supply of the State. 
35 Bagg (R. M., jr.). Eocene Protozoa. 
Md. Geol. Surv., Eocene, pp. 233-258, pi. Ixii-lxiv, 1901. 
36 Bailey (L. W.). On some modes of occurrence of the mineral 
albertifce. 
Abstract: Science, new ser., vol. 13, p. 1018 (£ p.), 1901. 
37 On some geological correlations in Now Brunswick. 
Abstract: Science, new ser., vol. 13, pp. 1018-1019 (|p.), 1901. 
Paper read before the Royal Society of Canada. 
38 Bain (H. Foster). Theorigin of the Joplin ore deposits [Missouri]. 
Abstract: Eng. and Mg. Jour., vol. 71, p. 557, 1901. 
39 [Review of Iowa Geological Survey, Vol. XI.] 
Jour. Geol., vol. 9, pp. 547-549, L901. 
40 Barbour (Carrie A.). Observations on the concretions of the Pierre 
shale. 
Neb. Acad. Sci., Proa, VII, pp. 36-38, pi. ii, 1901. 
Describes the occurrences and character of the concretions. 
41 Barbour (Erwin Hinckley). The unpublished meteorites of 
Nebraska. 
Neb. Acad. Sci., Proc, VII, pp. 34-35, pi. i, 1901. 
Describes new meteorites. 
4^} The State [Nebraska] Geological Survey. Report of progress 
for the summer of 1900. 
Neb. Acad. Sci., Proc, VII, pp. 166-169, pis. xiv-xv, 1901. 
Gives an account of the work conducted by theState Geological Survey. 
43 Sand crystals and their relation to certain concretionary forms. 
Geol. Soc. Am., Bull., vol. 12, pp. 165-172, pis. 13-18, 1901. 
Describes the character and occurrence of the crystals and concre- 
tionary forms in the Tertiary strata of the Plains region. 
44 Barton (George H.). Outline of elementary lithology 
Boston, 112 pp., 1901. (Not seen.) 
45 Bartsch (Paul), Dall (W. H.) and. A new Californian Bittium. 
See Dall (W. H.) and Bartsch (Paul), 189. 
46 Bather (F. A.), assisted by J. W. Gregory and E. S. Goodrich. 
A treatise on zoology. 
A. & C. Black, London, vii I 344 pp., 1900. 
Review, Science, new ser., vol. 14, pp. 844-845, 1901. 
