NORTHERN SUGAR INDUSTRY. 



79 



Besults of experiments made hy the Zootecchnic School in Eeggio, hy Professors Zanelli 



mid Spallanzani. 



TABLE I. 



Dat e of har- 

 vest. 



Date of an- 

 alysis. 



Mean of each cane. 



Juice extracted 

 to weight of 

 cane. 



Specific gravity 

 of juice at 

 15° C. 



Length. 



Diameter. 



Weight. 



Sept. 7 



7 



21 



21 



27 



27 



Oct. 17 



Meters. 

 2. 10 

 L 85 

 L 75 

 L 70 



Millimeters. 

 18.0 

 21.0 

 22.0 

 17.0 



Grams. 

 485.0 

 429.5 

 519. 5 

 457.0 



Per cent. 

 58. 30 

 56. 84 

 55. 52 

 52. 72 



1. 072 



1. 083 

 1. 092 

 1.107 



TABLE II. 



Date of harvest. 



Sept. 7 

 7 

 21 

 21 



Date of analysis of 

 juice. 



Sept. 15 

 27 

 27 



Oct. 17 



Juice. 



Glucose. Sucrose. 



Per ct. 

 2.20 

 3. 75 

 5. 96 

 7. 96 



Per ct. 

 16. 49 

 15. 43 

 15. 95 

 7. 09 



Sum of 



two 

 sugars. 



Per ct. 

 18. 69 

 19. 18, 

 2L 91 

 15. 05 



Non- 

 sugars 



Per ct. 



6. 30 



Coeffi- 

 cient of 

 purity. 



56. 54 

 24. 46 



TABLE III.. 



Date of harvest. 



Date of analysis. 



Sept. 21 



Oct. 2 



21 



2 



21 



5 



21 



5 







. kl « 



Eesult per 100— 











■ill 



Of 

 glucose. 



Of 

 sucrose. 



Of 

 both 

 sugars. 



50.76 

 32. 57 

 66. 34 

 53. 48 



10. 65 



6. 85 



7. 68 

 6. 09 



13. 63 

 17. 57 

 9. 46 

 5. 51 



24. 28 

 24. 42 

 17. 14 

 11. 60 



Part of the cane 

 analyzed. 



Lower part. 

 Upper part. 

 External part. 

 Internal part. 



To sum up from the observations and the comi)arisous op which the 

 preceding investigations bear, we come to these conchisions: 



1. The culture of Amber sugar-cane may very probably give, in our 

 country, a rich yield of crystallizable sugar, as it does in that American 

 State (Minnesota) from which the plant was originally brought. 



2. By prolonging the time which intervenes between the harvest of 

 the sorghum cane and its analysis, the juice obtainable therefrom and 

 its percentage in sucrose diminishes, while there is not always an in- 

 crease of glucose. Perhaps, by putting the cane under the ground 

 and moistening it before this is done, the losses may be considerably 

 reduced. 



3. The upper internodes and the peripheric strata of the cane seem 

 to yield a greater abundance of saccharose than the lower internodes 

 and the central strata, so that it would seem advisable not to sow thick 

 and to cultivate sorghum, just like beets, in such a way as to obtain the 

 product of an average and suitable size. 



