Proceedings of Seventeenth Normal Institute 177 



For all unused manure, or that whicli has recently been applied to the 

 land without a crop being grown thereafter, a credit of three-fourths of the 

 total value of the phosphoric acid and potash in the feed is allowed. • Because 

 a greater loss of nitrogen commonly occurs in stored manure than a manure 

 dropped in the fields by animals at pasture, a credit of 70 per cent of the 

 total value of the nitrogen is allowed when the stock have been fed at 

 pasture, and of only 50 per cent when they have been fed in barn or yard. 



When one crop has been grown since the application of the manure, a part 

 of the fertility thereby being used up, the credit allowed is only half that 

 stated above. It is realized that the beneficial effects of farm manure persist 

 much longer than two years, but owing to the difficulties in checking records 

 for a longer period, the compensation is not extended over a great time. 



The principles of the English law, as here set forth, should be drafted 

 into every lease drawn between landlord and tenant in this country. 



All men know how conservative are statements of law, yet 

 here it is seen that the percentages written into English law are 

 50 per cent of the nitrogen and 75 per cent of the phosphoric 

 acid and potash in the feed. We have not had to think of these 

 things in this country, but the sooner we begin to think of them 

 and practice them, the sooner will come a permanent system of 

 agriculture. 



Deducting the manurial value from the first cost we have the 

 net cost per ton in column 1 of Table III. Column 2 gives the 

 net cost of one pound of total digestible nutrients obt'ained by 

 dividing the net cost per ton by the pounds of total digestible 

 nutrients in each ton. The order of the feeds is changed to com- 

 pare with the order in Table I. 



Table III 



Feed 



Cottonseed meal 



Distillers' dried grains. 



Gluten feed 



Oil meal 



\Mieat bran 



Hominy 



Com meal 



Barley 



Ground oats 



This table throws all the high protein feeds to the head of the 

 list. The amount of the fertilizing constituents saved may be 

 estimated at a much lower figure, and still the relative value of 

 the protein feeds will be the lowest of any. Too much stress 



