CULTURE OF THE SUGAR BEET. 



83 



may be effected by the use of the ordinary hydrometer, the scale of 

 which registers specific gravities of from 1,030 to 1,100, or the compari- 

 son of the weight of a metallic body taken in the air and immersed in 

 the juice may be employed. 



By the first the instrument is immersed in the juice and allowed to 

 float until it becomes stable, the mark on the stem to which it descends 

 is noted, and the corresponding figure taken to learn the percentage of 

 sugar present. The figure thus obtained must be multiplied by the 

 coefficients given in the following table, published by Champion and 

 Pellet,* or the figures given in the subsequent table and corresponding 

 with the density found may be taken to save calculation : 



Be means of the average coefficients, the following table was con- 

 structed : 



These figures are determined for a temperature at 40° F., and are suf- 

 ficiently exact for all practical purposes. They are modified, however, 

 by certain circumstances of culture, such as the nature of the soil and 

 fertilizers, and the humidity of the year. It is also a fact that in the 

 juice of unripe beets the relation of the density and sugar percentage 

 varies from the relations given above. 



# La Bettrave a Sucre. 



