196 Bulletin 143. 



In any given case ih^ purify is obtained by dividing Xht per cent of 

 sugar in the juice times 100 by X\iq per ce?if. of total solids in that same 

 juice. Thus in sample No. i of the following tables ^^■^g''3-r=86.6 per 

 cent, purity. The term purity is not an indication of the quality 

 of a juice, but of the quality of the total solids in the juice ; that 

 is, it tells Jiow many parts are sugar in every 100 parts of the 

 total solids. 



Per cent, of sugar in beets without crowns. — It has been stated upon 

 good authority (Wiley, Agr. Anal., III., p. 242) that 95 per cent, of *t 

 the beet consists of juice and 5 per cent, marc^ or that which is left 

 after all the juice has been extracted. That is, each 100 pounds of 

 beets prepared for the factory yields 95 pounds of juice and 5 pounds 

 of marc. Having given the per cent, of sugar in each sample of juice 

 we multiply it by y*^5_ and have the per cent, of sugar in the beet. 

 The column headed per cent, sugar in the beet was obtained in each 

 case by this multiplication and the result was recorded as per cent, of 

 sugar in the beet. 



Thus in first analysis of tables \'].2<^x^jf^^=^i6.jQy the per cent, 

 sugar in the beet. 



Founds of sugar per ton of beefs. — In each case we multiply the per 

 cent, of sugar in the beet, or the number of pounds in 100 pounds of 

 beets by 20, a ton being 20 times 100 pounds, and record the result as 

 pounds of sugar per ton of beets, discarding decimals. Thus in first 

 analysis 1 6.39x20=3328 pounds, approximately, of sugar per ton. 



Pounds of sugar per acre. — In cases where yields have been given, we 

 multiply the pounds of sugar per ton by the number of tons yield per 

 acre. Thus 7.84x328 pounds=2,572 pounds per acre (discarding 

 decimals.) 



Kind of soil. — 1> =zloam. 



When ploived and drffh, inches. — In this column, Fnrfall plowed; 

 Srrrspring plowed. The numeral indicates depth in inches. 



The remainder of the tables is self-explanatory with the exception 

 of '-'■ Distance befivee7i beets in rows''^ and ^'' Average weight of beets.''' 

 From data sent to the Station, the length of the rows and the whole 

 nwnber of beets harvested were given, and from these the average dis- 

 tance between each beet in the rows was calculated. From the 

 recorded total weight and number of the beets harvested the average 

 weight of the beets less frowns and tops was ascertained. 



