BIBLIOGEAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 115 
Kraus, Edward H., and Hunt, W. F. 
1427. The occurrence of sulphur and celestite at Maybee, Michigan. — Am. 
Jour. Sci., 4th ser., vol. 21, pp. 237-244, 3 figs., March, 1906; Zeitschr. f. Kryst. 
u. Mineral., Bd. 42. Heft 1, pp. 1-12, 3 figs., 1906. 
Kraus, Edward II., and Scott, I. D. 
1428. Ueber interessante amerikanische Pyritkrystalle. — Zeitschr. f. Krystal. 
u. Mineral., Bd. 44, Heft 2, pp. 144-153, 3 pis., 1'.><>7. 
Describes the crystallographic characters and composition of pyrite crystals from Colo- 
rado and New Jersey. 
Kreutz, Stefan. 
1429. Ueber Zwillingskrystalle des Calcites von Guanajuato, Mexico. 
Tschermak's Mineral, n. Petrog. Mitt. (X. F.), Bd. 26, Hefi 1-2, pp. 140-141, 
1907. 
Describes the crystallography of calcite from Guanajuato, Mexico. 
Kiimmel, Homy I'.. 
1430. Administrative report of the state geologist [of New Jersey].— Now 
Jersey Geol. Survey, Aim. Kept. State Geol. for 1905, pp. 1-24. 1906. 
Includes various data relating to the geology of the State. 
1431. The chemical composition of the white crystalline limestones of Sussex 
and Warren counties TXew Jersey], with analyses by It. B. Gage. — New Jersey 
Geol. Survey, Ann. Kept. State Geologist for 1905, pp. 173,-11)1, 1906. 
1432. Notes on the mining industry [in New Jersey 1. — New Jersey Geol. Sur- 
vey, Ann. Kept. State Geologist for 1905, pp. 317-325, 1906. 
Includes notes on the iron, zinc, and copper mines and their production. 
1433. The peat deposits of New Jersey. — Econ. Geology, vol. 2, no. 1. pp. 
24-33, 1 fig., 1907. 
Descrihes the occurrence of peat deposits in New Jersey and the character, composition, 
and fuel value determined by testing samples. 
1434. Administrative report. — New Jersey Geol. Survey, Ann. Kept. State 
Geol. for 1906, pp. 1-16, 1907. 
1435. Notes on the mining industry [New Jersey].— New Jersey Geol. Sur- 
vey, Ann. Kept. State Geol. for 1906; pp. 173-181, 1907. 
Kiimmel, Henry B., and Gage, K. B. 
1436. The glass-sand industry of New Jersey. — New Jersey Geol. Survey, 
Ann. Kept. State Geol. for 1906, pp. 77-96, 4 pis., 1907. 
Kunz, George Frederick. 
1437. Gems, jewelers* materials, and ornamental stones of California. 
California State Min. Bur., Bull. no. 37, pp. 9-155, 51 figs.. 1905. 
1438. [Peridotite dike upon Manhattan Island]. — Abstract : Science, now ser., 
vol. 23, p. 388, March 9, 1906. 
1439. [Modoc, Scott County, Kansas, meteorite]. Abstract: Science, new 
ser., vol. 23. pp. 388-389, March 9, 1906. 
1440. History of the gems found in North Carolina. North Carolina Geol. 
and Econ. Survey, Bull. no. 12. 60 pp., 15 pis.. 1907. 
1441. (Jems and precious stones of Mexico. Congr. geol. intern.. < '. K. 
10' soss., Mexico, 1900, pp. 1029-1080, l«.i<>7. 
1442. Occurrence of the diamond in North America. Abstract: Geol. Soc. 
America, Bull., vol. 17. pp. 692-694, 1907. 
1443. Description of the Modoc, Scott County. Kansas, meteorite. Abstracl : 
New York Acad. Sci.. Annals, vol. 17, pt. 3. p. 620. 1P<)7. 
Mineral resources of the United States. 1905: precious stones. Soo qo, 2418, 
