MANURE VALrES (W CAT'l'li: I'oops 'j:,: 



The compensation taMr ihcy di-cw up >li(.\\.-«l (l) tli.- 

 amount of nitrogen, plujsphoiic acid, ami pnia^h in tin- food 

 itself; (2) the amomit passed l)y tlic animal alter takin;^ nnl 

 what it required for its own fattenini^^ increase ; (:J) [\w vahie of 

 this voided material at the current i)i-ic-es of tliesc constituents 

 in manures, or as they called it, tlie "original maiune vahie" of 

 the food. They then proceeded to arrani^'e a (-onipensation 

 tal)le on the basis of allowing tlie outgoing tenant half tlii> 

 original manure value, i.e., assuming that only iiall' of the 

 manure material voided by the animal would lie louud by the 

 incoming tenant in the manure heap he was taking over, '^lli•^ 

 compensation value was further diminished by one-third fi>i- 

 each additional year between the date when the food was con 

 sumedand the expiration of the tenancy ; thus the com|)ensatioii 

 value of food consumed in the last year of the tenancy would 

 1)6 half of the original manure value, and it would l»ecome 

 (me-half less one-third of itself (or one-third of the original 

 manure value) for food consumed in the second year before 

 the tenancy ended, and so on by steps of one-third less foi- 

 each earHer year. These tables were based on the composition 

 of the fattening increase as ascertained in the previous experi- 

 ments. Other tables were drawn up for milch cows, wln\-li 

 take a much greater toll of the food consumed. 



These compensation tables never passed into general use. 

 partly because of the somewhat complex character of tip- 

 argument and the long period previous to the expiration of the 

 tenancy over which tliey allowed compens<ition to l)e claimed 

 for the consumption of purchas.-d food. Tliey liave, however, 

 brought into prominence the gieat errors introdn'--' '- ♦^" 

 common custom of paying half fl^e purchase price • 

 consumed during the last year idy of the lenancy, .si; 

 manure value of a food is quite m.lependeiit nf its fo,..| 

 and price in the market. Decorticated cotton eake. for example. 

 has the highest manure value of any >ub>taiice .nnuiionly used 

 for food, yet it can be purchased more cheapl\ than linseed wike. 

 which has a much lower manure value. Maize, again, however 



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