490 REVIEWS 
between the Cambrian of Shantung, China, and the Cordilleran sections 
which the author will discuss in a future paper upon the Cambrian faunas 
of China. 
Coie He 
Studies of Frost and Ice Crystals. By Witson J. BENTLEY.  Re- 
printed from the Monthly Weather Review for August, Septem- 
ber, October, November, and. December, 10907. ~ Jericho, Viz, 
1907. 
This interesting memoir on frost and ice crystals deals with their 
forms, structure, life-history, and general relations. It contains twenty 
pages of descriptive matter and thirty-one plates. 
Cyn 
Lime and Cement Resources of Missouri. By H. A. BUEHLER. 
Missouri Bureau of Geology and Mines, Vol. VI, 2d Series. 
255 Pps 35 pls:, map... jellerson, 1007. 
This report describes the raw materials used in the manufacture of lime 
and cement; their uses, properties, and methods of manufacture; also 
a general description (by counties) of the formations affording these 
materials. 
C. J. H. 
Geology and Physical Geography of East Greenland. By Orto 
NORDENSKJOLD. Reprinted from “ Meddelelser om Gronland,” 
Vol. XXVIII, pp. 153-285, 4 colored plates. Copenhagen, 
1908. 
This reprint contains some of the observations of the Danish expedition 
of 1900. Many rock specimens were collected for petrographical study. 
The great central rock-mass of Greenland is crystalline, principally com- 
posed of primary gneisses, schists, syenites, porphyries, and basalts. Their 
age is early Archean. Around the central mass is a fringe, 50 to 75 miles 
wide, of sedimentaries, the oldest being Silurian. They are quite fossil- 
iferous. Both the crystallines and the sedimentaries show the effects of 
extensive vulcanism. 
The physiographic features described are: the fiords, the non-glaciated 
southern part of Jamesland, those of the coast-border, the central mass 
configuration of the country by glaciation, and fault valleys. Conia dsl, 
