CAMPBELL'S SOIL CULTURE MANUAL 303 



LIST OF TOOLS. 



One gang plow, two fourteen-inch. 



One four-horse disk harrow. . 



One four-horse improved harrow. 



One four-horse combination weeder. 



One four-horse Campbell sub-packer. 



One two-row cultivator. 



One one-horse cultivator. 



In addition to these tools comes such planters' drills 

 and harvesters as shall be needed for the crops the farmer 

 may wish to raise. 



The list of tools is such as has been found most desir- 

 able for securing the best possible physical condition of 

 *he soil at the least expense. 



THE SUB-SURFACE PACKER. 



There are few farm implements of high merit that have 

 had the struggle for recognition that the sub-surface packer 

 has. It was first put upon the market in 1895 and about 

 100 sold. A few more sold each succeeding year, but no 

 great numbers until the year 1905. 



The principal drawback was the fact that it was a 

 new tool, with a new mission, backed by a new principle, 

 and every conceivable theory has been advanced to side- 

 track its popularity mainly on the ground that the ideal 

 physical condition brought out by its proper use was not 

 necessary, and as the machine cost from $25.00 to $45.00 

 according to size and distance from factory, the public 

 generally were quite inclined to credit all theories of the 

 skeptics. 



But the machine kept persistently at its mission, prov- 

 ing the marvelous results to be gained from the new prin- 

 ciples involved, thereby steadily gaining recognition until 



