weeks.] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1894. 65. 
340 Kunz (George F.). A new locality of true emeralds. 
Am. Jour. Sci., 3d ser., vol. xlviii, pp. 129-430. 
Describes the occurrence and physical character of emeralds found 
in North Carolina. 
347 Mineralogical notes. 
N. Y. Acad. Sci., Trans., vol. xiii, pp. 144-145. 
Notes on topaz from Texas and diamonds from AVisconsin. 
347 ct and Huntington (O. W.). The diamond in the Canyon 
Diablo meteoric iron. 
Abstract : Eng. and Mg. Jour., vol. lvii, p. 394. 
Noticed in Bibliography and Index for 1892 and 1893. 
L. 
348 Lakes (Arthur). Colorado's new gold camps. 
Eng. Mag., vol. vii, pp. 623-638. 
Describes the occurrence of gold ores at Cripple Creek, the silver ores 
of Creede, and the newly discovered gold belt at Leadville. 
349 Lane (Alfred C). Geologic activity of the earth's originally 
absorbed gases. 
Geol. Soc. Am., Bull., vol. v, pp. 259-280. 
Abstract : Am. Geol., vol. xiii, pp. 138-139. 
Describes the nature of the absorbed gases and their importance 
in the crystallization of plutonic rocks. Discusses the possibility of 
deep-seated cracking, igneous phenomena and their causes, and the 
characteristics of contact and magmatic zones. 
350 Microscopic characters of rocks and minerals of Michigan. 
Michigan, Rept. of State Board of Geol. Surv. for 1891-92, pp. 176-183. 
Describes the occurrence of quartz-diabase, amphibolite and horn- 
blende schists and lamprophyres. 
351 What is Archean ? 
Science, vol. xxiii, p. 128. 
Discusses the use of the terms Azoic and Archean. 
3513 Lawson (Andrew C). The geology of Carmelo Bay. 
Univ. of Cal., Dept. of Geol., Bull., vol. i, pp. 1-59, pis. 1-4. 
Abstract: Am. Nat., vol. xxviii, pp. 57-58. 
Describes the general physiography and geology of the region, the 
petrographic characters of the Santa Lucia granite of the Carmelo aud 
Monterey series and of the eruptive rocks. Discusses the evidences of 
the ancient baselevels of the Pacific Coast. In this work Professor 
' Lawson was assisted by Mr. Juan de la C. Posada. 
353 The Post- Pliocene diastrophism of the coast of southern Cali- 
fornia. 
Univ. of Cal., Dept. of Geol., Bull., vol. i, pp. 115-160, pis. 8-9. 
Reviews: Jour, of Geol., vol. ii, pp. 235-238, by R. 1). Salisbury; Am. 
Geol., vol. xiv, pp. 335-338; Am. Nat., vol. xxviii, pp. 310-341 (£p.). 
Discusses the evidences which indicate an uplift of 800 to 1,500 feet 
along the coast of southern California during post-Pliocene time, aud 
of a differential movement of the crust in the same region. 
Bull. 135 5 
