PRODUCTIVE GARDENING 97 



ods of procedure with reference to the different 

 types of plants when we take up in successive 

 chapters the story of my work in the develop- 

 ment of plants of the vegetable garden. The 

 general methods of soil preparation, drainage, 

 irrigation, and fertilization are elsewhere treated 

 in detail. 



It is well to emphasize the im- 

 portant principle that the one es- 

 sential element without which no 

 plant can maintain life or take on 

 growth is water. 



4— Vol. 5 Bur. 



