TOIE FOR HAKVESTEN'G CROP. 127 



The following results are reported by Professors Scovell and Weber, 

 of Illinois Industrial University: 



Change of sugar after cutting the cane. — On October 23rd, 1880, an analysis 

 was made of the juice of the Orange cane, which had been cut, stripped, and 

 topped October 2nd, and placed under shelter until examined. Juice whitish. 



Specific gravity 1.091 



Grape sugar percent.... 14 66 



Cane sugar per cent..-. o.55 



A sample of cane, cut August 25th, 18S0, without being stripped and topped, 

 was preserved in a warm room, where it had become dry long before it was ex- 

 amined. On April 3rd, 1881, it was analyzed, and showed 12 per cent of grape 

 sugar, and no trace of cane sugar. 



Professor Swenson and Henry, of "Wisconsin State University, give 

 the following report of experiments in this matter. It is to be regretted 

 that the percentage of juice expressed in each experiment was not 

 given, in order that the real loss of sugar could have been determined, 

 as it was doubtless much greater than the several analyses of the juice 



would indicate : 



Effect of leaving Cane cut in the Field. 

 A number of stalks still in good condition, the juice of which contained 9.50 

 cane sugar and o.25 glucose, were cut and left in the field ten days, during 

 almost constant rain. At the end of the ten days the juice contained 5. 98 cane 

 sugar and 6.15 glucose. Some Early Orange cane was also cut September 

 20th, when the juice contained 10.50 cane sugar and 4.95 glucose, and was left 

 in the field till November 2nd, when the juice contained 13.80 glucose, while 

 not a trace of cane sugar was present. These experiments show conclusively, 

 that if cane is cut or injured and left exposed to rain, the destruction of cane 

 sugar goes on very rapidly, being in time entirely changed into glucose. The 

 rapidity of the change depends, of course, in great degree, on the weather. 



Effect of leaving Cane cut under Shelter. 

 In order to ascertain the effect of leaving cane under cover, two tons of 

 Early Amber cane were cut, the juice containing 10.02 per cent of cane sugar 

 and 3.23 per cent of glucose. One-half was topped and stripped, and both lots 

 wore placed on the floor of the barn. The change taking place may be seen 

 from the following table : 



September 20th 

 The cane freshly cut 



October iTH. 

 After two weeks : 



(Stripped) 



(Unstripped) 



October 19th, 

 After four weeks : 



(Stripped) 



(Unstripped; 



3.41 

 3.74 



