Are nitrates of potash and soda solids, liquids or gases? 



Are nitrates soluble ? Is there danger of their being lost from 

 the soil ? 



What is an amendment ? 



Is the soil in your garden sour? Tr}' it. 



In what materials can you buy phosphoric acid for fertilizer 

 purposes ? 



In what can you buy potash ? 



In what can you buy nitrogen ? 



Are there any home fertilizers, or common farm materials 

 (aside from barn manure), in which you can get these three 

 elements ? 



