* Iddings's Rock Minerals 8vo, 5 oo 



Johannsen's Determination of Rock-forming Minerals in Thin Sections 8vo, 4 oo 



* Martin's Laboratory Guide to Qualitative Analysis with the Blowpipe. 12010, 60 

 Merrill's Non-metallic Minerals: Their Occurrence and Uses 8vo, 4 oo 



Stones for Building and Decoration 8vo, 500 



* Penfield's Notes on Determinative Mineralogy and Record of Mineral Tests. 



8vo, paper, 50 

 Tables of Minerals, Including the Use of Minerals and Statistics of 



Domestic Production 8vo, i oo 



Pirsson's Rocks and Rock Minerals. (In Press.) 



* Richards's Synopsis of Mineral Characters i2mo, mor, i 25 



* Ries's Clays: Their Occurrence, Properties, and Uses 8vo, 5 oo 



* Tillman's Text-book of Important Minerals and Rocks 8vo, 2 oo 



MINING. 



* Beard's Mine Gases and Explosions Large i2mo, 3 oo 



Boyd's Map of Southwest Virginia Pocket-book form, 2 oo 



Resources of Southwest Virginia 8vo, 3 oo 



Crane ' s Gold and Silver. (In Press.) 



Douglas's Untechnical Addresses on Technical Subjects I2mo, I oo 



Eissler's Modern High Explosives 8vo 4 oo 



GoesePs Minerals and Metals : A Reference Book i6mo f mor. 3 oo 



Ihlseng's Manual of Mining 8vo, 5 oo 



* Iles's Lead-smelting i2mo, 2 50 



Miller's Cyanide Process i2mo, i oo 



O'Driscoll's Notes on the Treatment of Gold Ores 8vo, 2 oo 



Peele's Compressed Air Plant for Mines. (In Press. ) 



Riemer's Shaft Sinking Under Difficult Conditions. (Corning and Peels) . . .8vo, 3 oo 



Robine and Lenglen's Cyanide Industry. (Le Clerc.) 8vo, 4 oo 



* Weaver's Military Explosives 8vo, 3 oo 



Wilson's Chlorination Process limo, i 50 



Cyanide Processes i2mo, i 50 



Hydraulic and Placer Mining. 2d edition, rewritten i2mo, 2 50 



Treatise on Practical and Theoretical Mine Ventilation i2mo, i 25 



SANITARY SCIENCE. 



Association of State and National Food and Dairy Departments, Hartfora Meeting, 



1906 8vo, 3 oo 



Jamestown Meeting, 1907 8vo, 3 oo 



* Bashore's Outlines of Practical Sanitation 12mo, i 25 



Sanitation of a Country House 12mo, i oo 



Sanitation of Recreation Camps and Parks 12mo, i oo 



Folwell's Sewerage. (Designing, Construction, and Maintenance.; 8vo, 3 oo 



Water-supply Engineering 8vo, 4 oo 



Fowler's Se\age Works Analyses 12mo, 2 oo 



Fuertes's Water-filtration Works 12mo, 2 50 



Water and Public Health 12mo, i 50 



Gerhard's Guide to Sanitary House-inspection 16mo, i oo 



* Modern Baths and Bath Houses 8vo, 3 oo 



Sanitation of Public Buildings 12mo, i 50 



Hazen's Clean Water and How to Get It Large I2mo, i 50 



Filtration of Public Water-supplies 8vo, 3 oo 



Kinnicut, Winslow and Pratt's Purification of Sewage. (In Press. ) 



Leach's Inspection and Analysis of Food with Special Reference to State 



Control 8vo, 7 oo 



Mason's Examination of Water. (Chemical a::d Bacteriological) 12mo, i 25 



Water-supply. (Considered principally from a Sanitary tandpoint) . . 8vo, 4. oo 

 18 



