weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1898. 67 
539 Maxwell Walter . Lavas and soils of the Hawaiian Islands. 
Hawaiian Experiment Station, 186 pp., 4 pis. and map; Review, Am. 
Nat., vol. xxxii. pp. 537-539, 1898. 
Describes the lavas, and the character of the soils derived from them. 
Includes chemical analyses of the various lavas. 
540 Maynard (George W.). The chromite deposits of Port au Port 
Bay. Newfoundland. 
Am. Inst. Mg. Engrs., Trans., vol. xxvii, pp. 283-288, 1898. 
Des. ribes the occurrence of chrome ores in this region. 
541 Mead (J. P.). The drill hole at Wichita [Kansas]. 
Kan. Acad. Sci., Trans., vol. xv. pp. 20-22, 1898. 
Gives the section to a depth of 642 feet. 
542 Medeira (George). See Day (W. C), No. 227. 
543 Meem (James 0.). [Geology and its relations to topography.] 
Am. Soc. Civil Engrs., Trans., vol. xxxix. pp. S2-83, 1898. 
In discussion of paper by John C. Branner on the same subject. 
544 Merivale Walter). Occurrences and mining of manjak, in Bar- 
bados, West Indies. 
North of Eng. Inst., Mg. and Mech. Engrs., Trans., vol. xlvii, Pt. Ill, pp. 
119-127. 1898. 
Describes occurrence of bituminous material locally known as manj ak. 
545 Merriam (John C). The distribution of the Xeocene sea urchins 
of middle California, and its bearing on the classification of 
the Xeocene formations. 
Univ. of Cal., Dept. of Geol.. Bull., vol. ii. pp. 109-118. 1898. 
Discusses the occurrence aud relations of species, the character and 
relations of the San Pablo formation, the classification of the Neocene 
and the correlation of the auriferons gravels. 
546 [Fossils from the San Pablo formation. California.] 
Jour, of Geol., vol. vi, pp. 494-495, 1898. 
Gives a list of fossils from Kirker Pass, Contra Costa County. 
547 Merrill (F. J. H.). A guide to the study of the collections of the 
New York State Museum. 
X. Y. state Mus., Bull., vol. iv, No. 19. pp. 107-262, pis. i-cxix, 1898. 
Describes the general principles of geology and give-* a brief account 
of the various geologic subdivisions, and of the economic products 
occurring in New York. 
*~ 
548 Merrill (F. J. H.). The geology of the crystalline rocks of south- 
eastern New York. 
N. Y. State Mus., 50th Ann. Rept., vol. i. Appendix A, pp. 21-31, pis. i-v. 
1898. 
Describes character and occurrence of the crystalline rocks and of 
the pre-Cambrian, Cambrian, and Silurian strata. 
