Correspondence. 265 
WIELAND, G. R. (See WARD, L. F.) 
WOODWORTH, J. B. 
Pleistocene Geology of Mooers Quadrangle, New York State 
Mus., Bull. 83, pp. 60, pis. 25, map, 1905. 
WOODWORTH, J. B. 
Ancient water-levels of the Champlain and Hudson valleys, N. 
Y. State Museum, Bull. 84, pp. 265, plates 28, July, 1905. 
CORRESPONDENCE 
Economic Geology in Peru. — It might be of some interest to 
the readers of the American Geologist to learn something about 
the scientific organization recently created by the government of 
Peru to investigate the natural resources of the republic. Owing 
to the very rapid development of the various mining industries, the 
establishment of a bureau which should be authorized by the gov- 
ernment to locate and fix boundaries of mining claims, collect sta- 
tistics relative to the production and values of ores, and accumu- 
late various data relative to the geology, mineralogy, and geog- 
raphy of the country, became an immediate necessity. Accordingly 
in 1902 the bureau now known as the "Cuerpo de Ingenieros de 
Minas del Peru" was established with Sr. J. Balta, the present min- 
ister of public works, as the director. It was soon discovered how- 
ever, that the subjects and projects demanding the immediate and 
serious consideration of this organization were so numerous and 
varied in kind, that it became highly advisable to classify the work 
in hand and distribute allied lines of investigation to independent 
commissions each with its chief and corp of assistants, the series 
of commissions, however, being under the general charge of the 
Director of the "Cuerpo," Sr. Marco A. Denegeri. The divisions 
of the "Cuerpo" are as follows: 
1. Division of Mines, established 1902, including: 
(a) Permanent commissions in large mining areas, to locate 
claims, fix boundaries, etc. 
(b) Exploratory commissions to investigate and report upon 
newly discovered mining areas. 
2. Division of Water Supply, established 1904, including: 
(a) Engineering projects relating to the storage and distribu- 
tion of surface water for irrigation purposes. 
(b) (Geological Investigations to determine location and distribu- 
tion of underground waters. 
3. Division of Economic Geology, established in 1904. 
