LETTER OF TRANSMITTAL. DEPARTMENT OF THE INTERIOR, Washington, D. C., February 27, 1900. SIR: I submit herewith the manuscript for a revised and enlarged edition of Bulletin No. 148, entitled Analyses of Rocks, etc. Dr. Hillebrand's portion of the former bulletin is so much extended, and represents so distinct a demand, that it will be presented by him as a separate bulletin. |
