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BULLETIN 355, U. S. DEPARTMENT OF AGRICULTURE. 



SUPPLIES. 



Specimens of common rocks as follows: 

 Granite, schist, shale, slate, limestone, 

 marble, sandstone, quartzite, feldspar, 

 hornblende, quartz, black and white 

 mica, calcite. gypsum. 



1 pound paraffin. 



4 ounces muriatic acid. 



1 quart powdered limestone. 



Several small pieces limestone. 



1 quart sodium nitrate. 



1 quart muriate of potash. 



1 quart sulphate of potash. 



1 quart ammonium sulphate. 



1 quart kainit. 



1 quart acid phosphate. 



1 quart rock phosphate. 



1 quart bone meal. 



4 ounces ammonium carbonate. 



4 ounces marble dust. 



6 packages each of red and blue litmus 



paper. 

 1 pound lump sugar. 

 1 pound powdered sugar. 

 6 sticks sodium hydroxid. 

 1 quart burnt lime. 

 1 stick sealing wax. 



Note. — The apparatus and supplies have been estimated for a class of twelve. Ordinarily two people 

 will work together in laboratory practice, and the quantity of apparatus and supplies may be varied to 

 suit the size of the class. The different soils needed should either be furnished as a part of the supplies, 

 or else arrangements must be made for the class to secure and dry them before the work of the course is 

 begun. 



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