...from that bulletin, pp. 439 to 532, published separately. The following publications on fuel testing, except those to which a price is affixed, can be obtained free by applying to the Director, Geological Survey, Washington, DC The priced publications can be purchased from the Superintendent...

...indicated by the С : (О + ash) ratio-efficiency curve. PUBLICATIONS ON FTTEL TESTING. The following publications, except those to which a price is affixed, can be obtained free of cost by applying to the Director of the Bureau of Mines, Washington, DC The priced publications...

...transmission or by pipe systems for conve.ving the gas. SURVEY PUBLICATIONS ON FUEL TESTING. The following publications, except those to' which a price is affixed,...can be obtained free by applying to the Director, Geological Survey, Washington, DC The priced publications can be purchased from the Superintendent...

..."Introduction" contain discussions of the copper resources of the districts of which they treat. The government publications, except those to which a price is affixed,...can be obtained free by applying to the Director, US Geological Survey, Washington, DC The priced publications may be purchased from the Superintendent...

..."Introduction" contain discussions of the copper resources of the districts of which they treat. The government publications, except those to which a price is affixed,...can be obtained free by applying to the Director, US Geological Survey, Washington, DC The priced publications may be purchased from the Superintendent...

...than are commonly used at present. SURVEY PUBLICATIONS ON FUEL TESTING AND BRIQUETTINO. The following publications, except those to which a price is affixed,...can be obtained free by applying to the Director, Geological Survey, Washington, DC The priced publications can Y>& the Superintendent of Documents,...

...gas published by the United States Geological Survey or by members of its staff. The United States publications, except those to which a price is affixed,...can be obtained free by applying to the Director, US Geological Survey, Washington, DC The priced publications may be purchased from the Superintendent...

...SLATE, AND ROAD METAL. The following list comprises the more important publications on stone, slate, and road metal by the United States Geological Survey....publications may be purchased from the Superintendent of Documents, Government Printing Office, Washington, DC The annual volumes on Mineral Resources of the...

...in the lists given under the heads "Cement" and Building stone." These publications, except the one to which a price is affixed, can be obtained free...States Geological Survey, Washington, DC The priced publication may be purchased from the Superintendent of Documents, Government Printing Office, Washington,...

...this direction ha's been rapid within the past few years. PUBLICATIONS ON FUEL TESTING. The following publications, except those to which a price is affixed, can be obtained free by applying to the Director of the Bureau of Mines, Washington, DC The priced publications can be purchased from the Superintendent...