Nov. 1906.] 



427 



Miseellaneouti. 



3. That, all things considered, 800 pounds of cotton meal are equivalent, as 

 a fertilizer, to 2,000 pounds of cottonseed. 



I will first give the actual analysis of cottonseed and of cotton meal and hulls: - 



TABLE NO. 1, 

 ANALYSES OF COTTONSEED AND PRODUCTS. 



Av. phospho- Relative 



ric acid. Nitrogen. Potash. coru'L 



Substance. Per cent. Per cent. Per cent. Value. 



Cottonseed ... ... 1'27 ... 313 ... 117 ... $11-83 



Cotton meal ... ... 2"50 ... 7 00 ... 1\50 ... 25'00 



Cotton hulls ... ... 0-25 ... 0-69 ... 102 ... P02 



The oil and linters are not included in the above table, for the reason that 

 neither is considered of any appreciable value for fertilizing purposes. The " Reli- 

 able Commercial Values " in the last column are based on the following valuations 

 of the three " valuable elements " : Av. phosporic acid, 5 cents per pound ; nitrogen, 

 15 cents per pound ; potash, 5 cents per pound. These will be admitted as 

 approximately correct valuations and fair for all the purposes of this paper. Let 

 us now present the content of each of the three " valuable elements " present 

 in each of the three ingredients into which the whole seed is divided. Author- 

 ities differ somewhat, and the oil mills also vary in their results ; but it may 

 be accepted as a fair average that the output of one ton of cotton seed is about 

 740 pounds of meal and 900 pounds of hulls. 



TABLE no. 2. 



TOTAL AMOUNT AND VALUES IN ONE TON OF SEED. 



Phosphoric Relative 



acid. Nitrogen. Potash. com'l. 



Lbs. Lbs. Value. 



740 lbs. cotton meal ... 18-50 ... 51-80 ... 11-10 ... $9 24 



900 „ hulls ... ... 2-25 ... 6-21 ... 9-18 ... i- 50 



1,640 lbs. meal and hulls ... 20 75 ... 58-01 ... 20"28 ... 1077 



The one ton of seed ... 25-40 ... 62-60 ... 23'40 ... 1P83 



Loss... ... 4 65 ... 4-59 ... 3T2 ... ~$H)6 



The " loss " stated in the foregoing table must be charged to the linters, oil 

 and waste not included, amounting to $1'06. With the facts of the analytical 

 results just before us we are prepared to make a comparison of the relative content 

 and value of the fertilizing ingredients. The last table shows that of the $11 -83 

 worth of plant food contained in one ton of seed we find $9'24 worth in the meal 

 produced from the ton of seed. In other words, the 740 pounds of meal yielded by 

 the ton of seed lack only $2*59 of representing the total plant food content of the 

 ton of seed. But a more direct and practical comparison is that which maybe 

 drawn between a ton of seed and a ton of meal. The farmer as well as the crusher 

 w ants to know how much cotton meal will be a fair exchange for one ton of seed, 

 not taking account of the commercial value of the oil and of the hulls which the 

 crusher is assumed to return. 



Table No. 1 shows that one ton of cotton seed contains a relative value of 

 phosphoric acid, nitrogen and potash of $11-83. On the other hand, one ton of 

 cotton meal contains the same plant food elements to the amount of $25-(J0. By an 

 easy calculation we find that one ton of cotton meal contains as much plant food, or 

 fertilizing values, as are contained in 4,230 pounds of the seed. Or, to state it differ- 

 ently, 943 pounds of meal contain as much plant food as are found in 2,000 pounds of 

 seed. In other words, 943 pounds of cotton meal are the fertilising equivalent of 

 one ton of seed. This comparison, however, does not take account of the fact that the 



