COMPARATrVE VALUE OF SORGHUM AND OTHER CROPS. 



423 



Tlie average yield and value per acre for eleven years, from 1871 to 

 1881, inclusive, is thus comparatively pr.?sented: 



Cereals. 



Yield Value 

 per acre, per acre. 



Corn 



Uheat 



Oats.. 



Rye 



Barley 



Buckwheat 



RECAPITrL.\TIOy OF CEREAL CROPS OF THE TXITED STATES. 



In a letter to the committee of the National Academy of Sciences, 

 C. Conrad Johnson, Esq., an experienced sugar-boiler, after a careful 

 consideration of the results of the investigations made at the Depart- 

 ment of Agriculture during the years 1878 to 1881 inclusive, makes 

 comparisons between sorghum, sugar-canes, and beets, as sources for 

 the economical production of sugar. His results will be examined 

 with interest. He says as follows : 



Having thus compared fully tlie chemical constituents of the canes under dis- 

 cussion, the processes best adapted for the attainment of the ends in view, to- 

 gether with such suggestions as may seem proper toward enabling the operatiou 

 to be conducted with a minimum loss, we may return to the comparison of the 

 actual results obtained in practice with the " available" ones presented by Dr= 

 Collier in his table.'. If we accept it as a fact that Louisiana cane will produce 

 on an average 2,000 pounds of sugar and IJO gallonsof molasses to the acre 

 (and we believe that, taking the plant and raioons together, this will be found 

 a hi^h estimate), we have the following data: 



Average Louisiana cane: 



Pugar. pounds . . 2,000 



Molasses gallons .. 120 



