62 



manufacture is to be carried on on a large scale, I give the means of the 

 analyses of the different varieties from that stage on 1 : 



* The method of determining available sugar does not clearly appear. 



These analyses were continued in great detail during the following 

 years, 1881 and 1882, and the results are found in the reports of the 

 Department. 2 



The averages for the whole number of samples for each stage after 

 the sixth is given below. 3 



The effect of frost on the character of the juice was also investigated. 4 

 The frost produced a loss of sucrose amounting to 15.5 per cent., and a 

 gain of glucose, 29.1 per cent. 



Dr. Collier makes the following observations on the results of the 

 analyses : 5 



GENERAL RESULTS OF ANALYSES BEARING UPON THE QUESTION OF AVAILABLE SUGAR. 



By reference to the table giving the general results of all the analyses of the several 

 varieties of sorghum in 1879, 1830, and 1831, the aggregate number of analyses being 



1 Department of Agriculture, Report 1880, pp. 110, 111. 



2 Department of Agriculture, Report 1881-1882, p. 370 et seq., and Investigations of 

 Sorghum as a Sugar-Producing Plant, special report, 1833. 



3 Department of Agriculture, Report 1851 and 1882, pp. 438 et seq. 



4 Department of Agriculture, Report 1881 and 188.2, p. 460. 

 6 Op. tit., p. 462. 



