THE SUGAR SORGHO. 275 
the other hand, we observe that this vegetable, poor in nitrogenized 
matters, should not much impoverish the soil of the most precious 
ingredients, for the leaves of the sorgho, being eaten by cattle, pro- 
duce manure. The canes, deprived of their sweet juice, may serve as 
long manure, or even for forage, and the seeds, which will be profit- 
ably consumed on the farm, in the form of soups and broths for man, 
or for fattening animals, will also furnish its proportionate return. In 
a word, it is clear that the nitrogenized matters are returned to the 
soil, and it is only the carbonaceous matters which are employed for 
manufacture, consequently there are in the cultivation the most re- 
markable conditions of an improving and progressive agriculture. 
We will here add the following results to explain this mooted 
question of the exhaustive action of the sorgho. Admitting for_a 
yield the figures of M. Hardy, we find, 
Crop. 
Stalks, 215,000 pounds; dry matter, about 64,000 pounds 
Leaves, 54,000 “ is = 16,000 Ibs. Troy. 
Seeds, 96,000 Se - - 9,400 a 
89,000 lbs. Troy. 
Admitting that the impoverishment of the soil by the sorgho be 
fifty per cent. of the dry matter, we have 45,000- Ibs. of impoverish- 
ment, which requires 400 of manure for 100 of impoverishment, say 
180,000 lbs. of natural manure. 
We should deduct from this total the amount of manure furnished 
by the crop itself. We have 
. Roots left in the soil, - - - 8,000 lbs. Troy. 
Bagasse (supposing that it is deprived of its 
water of vegetation), - - = ED O00. 0 i4* 
Leaves, - - - - 54,000 os 
Total, - - - . - 250,000 Ibs. Troy. 
Which we may consider to be worth 60,000 of hay (taking the equiva- 
Jent of 400 of the millet), giving, at least, 122,000 Ibs. of manure. 
Thus, on the 175,000 lbs. to rise upon the two and a half acres for the 
cultivation of the sorgho, there is of manure 122,000 Ibs., which are 
