weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1898. 59 
455 Knowlton (Frank Hall). In a coal swamp. 
The Plant World, vol. ii, pp. 21-23, 1 pi., 1898. 
Gives a brief account of the plants of the Coal Measures. 
456 Kiimmel (Henry B.). The Newark system or Bed Sandstone belt 
[New Jersey]. 
N. J. Geol. Surv., Ann. Rept., 1898, pp. 23-159, pis. ii-ix, figs. 1-25, 1898. 
Describes the character, occurrence, and structure of the sedimentary 
and trap rocks and metamorphosed shales and their economic resources 
within the State. 
457 The age of the artifect-bearing sand at Trenton [New Jersey]. 
Science, new ser., vol. vii, pp. 115-117, 1898. 
Discusses the age and origin of the sand. 
458 Kunz (George F.). Meteoric stone from Andover [Maine]. 
Science, new ser., vol. viii, p. 840 (i p.), 1898. 
Contains summary of paper read before the N. Y. Academy of Sciences. 
L. 
459 Ladd (George E.). Geological phenomena resulting from the sur- 
face tension of water. 
Am. Geol., vol. xxii, pp. 267-285, pi. viii, 1898. 
Discusses phenomena produced by capillary flocculation and floating 
of materials. 
460 Lakes (Arthur). The geology of Aspen and the conditions exist- 
ing in the Smuggler mine at the time of the fire [Colorado]. 
Mines and Minerals, vol. xviii, pp. 251-253, 3 figs., 1898. 
Describes the general geologic features of the region. 
461 Silver Cliff district [Colorado]. 
Mines and Minerals, vol. xviii, pp. 296-297, 3 figs., 1898. 
Describes the occurrence of the gold and silver ore bodies. 
462 Volcanic craters. Real and false craters and their relation to 
mining and ore deposits. 
Mines and Minerals, vol. xviii, pp. 321-322, 2 figs., 1898. 
Discusses the occurrence of volcanic vents in Colorado. 
463 Eosita and Silver Cliff [Colorado]. 
Mines and Minerals, vol. xviii, pp. 344-346, 5 figs., 1898. 
Describes the occurrence of the silver-lead ores of the region. 
464 Telluride ores. 
Mines and Minerals, vol. xviii, pp. 369-370, 1898. 
Describes the character and occurrence of some of the telluride ore 
deposits of Colorado. 
465 Prospecting experiences. 
Mines and Minerals, vol. xviii, pp. 398-400, 4 figs., 1898. 
Describes geologic features about Salida and Rosita, Colorado. 
