194: PRACTICAL AGRICULTURE. 



I 



SO on perpetuall}^ It is on this principle that some 

 farms which twenty years ago gave 100 loads, now 

 give but 50 ; while others which then gave 100, now 

 give 200.. Good management has doubled the amount 

 in one case, and a lack of good management has 

 halved it in the other. In one case it has been com- 

 pound interest in ; in the other it has been compound 

 interest out The owners, with few exceptions, are 

 to-day rich or poor accordingly. 



B65. This shows the importance of so applying ma- 

 nure that it will progressively beget its like. It shows 

 also that the perfection of crop-growing, the thing to 

 be aimed at, is, as above stated, to know the deficien- 

 cies of the soil, the wants of the crop, and the ingre- 

 dients of manures, and to apply the manures accord- 

 ingly. 



PERFECTION NOT ATTAINABLE. 



S6Q. In the present state of knowledge such perfec- 

 tion is not attainable. Scientific investigation and 

 practical experience are slowly, but surely, advancing 

 our knowledge. Knowledge applied to agriculture 

 will render attainable that which is now unattainable. 

 At present we must proceed by such light as we now 

 enjoy — must think it much if we can approximate 

 what posterity will attain. 



ANALYSES OF SOILS. 



367. A great difference exists between an exact 



