Subsoiling a Success on I. H. C. Demonstration Farm 



INTERNATIONAL HARVESTER COMPANY OF AMERICA. 



W. K. WOOD, MANAGER. W. A. RENN, SUPERINTENDENT. 



BROOKHAVEN, Miss., September 11, 1912. 

 Du PONT POWDER Co., Wilmington, Del. 



Gentlemen. As requested I am sending under separate cover four views, one 

 each of cotton and corn, not subsoiled and one of each subsoiled. 



You will note the great difference, and we will subsoil more extensively the 

 coming year. 



Yours truly, 



W. A. RENN. 



Subsoiling a Success in Europe 



February 13, 1912. 



I thought you might be interested to know that while a student at the Tokay 

 Agricultural School at Tokay, Austria-Hungary, I subsoiled three acres of 

 ground with dynamite prior to planting grape vines. The ground was in a 

 very steep hillside and practically covered with shale rock. The dynamite broke 

 up the ground and made it porous, and it is conservative to say that the vines 

 planted in this way produced 50 per cent, more than those adjacent planted in the 

 ordinary way. 



Yours truly, 



ALEX RICHTER, 



Highland, Arkansas. 



The Best Time to Subsoil 



Subsoiling with Red Cross Dynamite should be done only when 

 the soil is dry preferably immediately after harvest. Wheat or other 

 cereal crops are usually harvested early in summer. The field may 

 then be subsoiled under ideal conditions in July or August. Ground 

 bearing corn, potatoes, hops, or other late maturing crops, should be 

 subsoiled in September, October or November as soon as the crop is 

 off. Spring subsoiling is not advisable unless the soil is quite dry 

 and when good rains may be expected soon after. 



Get What You Pay For 



The strength of all Du Pont dynamites is shown on the cartridges 

 and cases with the exception of our Permissible Explosives and ex- 

 plosives having strengths of 20 per cent, or less. We guarantee the 

 strength marking on cartridges and cases to be correct. 



Anyone using dynamite the strength of which is not marked 

 is probably getting less than the represented strength and is therefore 

 paying too high a price for what he buys. Inferior goods, you know, 

 can be sold at lower prices than standard manufactures. 



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