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expressed in weight per acre, the content of sucrose in the juice, and the total yield 

 of sugar per acre, which data form the ultimate purpose and end of the work. 



The work of determining the weight of beets per acre was done hy selecting a 

 given numher of 3 square rods, according to the size of the whole plat, and ascertain- 

 ing the weight of each square rod from the several parts of the plat and taking the 

 mean as representing the 160-part of an acre. The details of selecting the square 

 rods and the weighing of the Beets were as follows : A wooden square made of light 

 wood, was dropped down upon the place selected. That frame inclosed exactly 1 

 square rod. Every beet was taken up inside the square and none outside, so that 

 each measurement was essentially precise. The beets were thoroughly cleaned ; the 

 tops, including the neck, were cut off with any coarse lateral roots, -and weighed 

 immediately. As already said, the mean of the square rods thus weighed upon each 

 plat was taken as the acre unit. 



The method of sampling a plat for determining the per cent of sucrose in the juice 

 ancl the yield of sugar per acre was as follows : The length of the plats in Field B 

 was between 30 and 40 rods, consequently the breadth of the plats was very small 

 and the number of rows of beets few. Where the number of rows to a plat was less 

 than 20 one average row was selected, and where the number exceeded 20 to the 

 plat two average rows were selected. The selected rows were taken up in the follow- 

 ing order : Either one hundred or two hundred beets, as decided upon, were selected in 

 twenties from either five or ten different places in the rows, the places being so far apart 

 as to give an actual average of the beets in the rows. Those beets were taken imme- 

 diately to the laboratory and analyzed. Each one of those two hundred beets was anal- 

 yzed individually, in order to afford not only an average, but also to observe the scale 

 of variation in weight and sugar content of the single beets. In the next place, the 

 whole of the beets remaining in the selected rows were taken up and brought direct 

 to the laboratory and analyzed in "tens," i. e., the juice of ten beets already weighed 

 and ground up, was expressed and one polariscope reading made. From the indi- 

 vidual beets the weight and sugar content of each one were found ; and from the 

 beets analyzed in tens the average weight, sugar content, and purity were obtained. 

 The number of beets analyzed daily was from one hundred upwards, even to nine 

 hundred daily, where the work was done in tens. 



The weight of beets per acre (the samples being prepared for the scales in the 

 manner already described) of the several varieties was as follows : 



Field B. 



*A11 tons=2,000 pounds. 

 Field A. 



