300 



STATE BOARD OF AGRICULTURE. 



TABLE 6. — Rate and extent of solubility of unleached powdered rocks when the ratio of rocks to distilled 

 w'ater was 1 to 0.73 and mixture viaintained at room temperature. Figures represent freezing point 

 depression. 



Days. 



Banded biotlte-gnelss 



Biotite granite 



Compact lithographic lime- 

 stone 



Crumbled mlca-schlst 



Diabase 



Dlorite 



Hornblend basalt 



Horblend gabbro 



Marble (dolomitlc) 



Peridotlte 



Quartzite (baraboo) 



Red roofing slate 



Siliceous dolomite 



Shale 



Syenite 



80. 



C 

 .024 



.027 



.021 



.017 



.020 



.025 



.027 



.020 



.028 



.055 



.012. 



.036 



.050 



.038 



.025 



