— sa ClcerClCt—‘S 
No, 98.] 23 
tion of fertilizer; the next plat 200 pounds; the next, 400 pounds ; 
the next, 600 pounds; the next, 800 pounds; and the last, 1,000 
pounds of sulphate of potash per acre. The influence of the potash 
in hastening maturity of growth was quite marked. 
The figures of the analyses at the various dates read as below: 
October 4. 
Sp. grav. Cane Total Ratio glucose 
a of juice. Glucose. sugar. sugar. to cane sugar. 
SUMMER nae dy see Souls seus cs 1064 3.23 8.73 11.96 = | 
200 lbs. sulphate potash per acre.. 1064 3.93 9.29 13.22 1: 2.4 
400 < The is eevee 1 FOOL 3.41 9.36 12.77 1227 
600 ‘ of c: iste seats eeag Ue 3.72 9.68 13.40 1: 2.6 
800 <é 4 Je Pies ADOS 3.72 9.66 13.38 1: 2.6 
1000 “ is a ota te SCO 3.81 9.80 13.61 1: 2.6 
October 11. 
RENEE oad bag ace oct essa asen 1076, 3.20 12.53 15.73 rues 
200 lbs. sulphate potash per acre.. 1072 3.84 11.56 15.40 128 
400 “. a ‘ss dat Niggas LOGS 3.67 10.70 14.37 1: 2.9 
600 ‘ * + SGU Nr rig att BOGS 3.95 10.63 14.61 FF 27 
800 *‘ ie - etl ta. LOG 3.74 11.77 15.51 ye By 
1000 <* wis 4 Oh 26 tax. 1068 3.26 11.16 14.42 1: 3.4 
October 20. 
SSP rer eres 1070 2.93 13.15 16.08 1:44 
1000 lbs. sulphate potash per acre.. 1068 3.27 12.63 15.90 1: 3.8 
The ash of the cane grown without fertilizer was 2-10 per cent; 
the ash from the cane grown with 1,000 pounds sulphate of potash ap- 
plication per acre was 2-29 per cent. 
The variation in the sugar of the juice from the canes of October 
4 is undoubtedly due to the potashed plats being occupied with riper 
plants; by October 11 the influence of the stage of ripening had be- 
come diminished and the potashed plats fell off in sugar yield, which 
on October 20 becomes well marked again. So far as one year’s trial 
can determine, we may assume with some probability that the effect of 
the potash was to diminish the sugar yield of the plats where applied, 
and that the proportion of potash used was of little consequence, the 
smaller quantity being sufficient, the larger not too much. More im- 
portant yet, the ratio between glucose and cane sugar seems changed 
by the use of the potash, thus: : 
Ratio of glucose to cane sugar. 
No potash used. Average of potashed plats. 
October 4...... ae 1:2. 1:2.6 
NS ; 1:3.9 1:3.0 
CUS | ae arr 1:44 1:3.8 . 
As the crystallization of the sugar from the syrup is hindered by the 
presence of glucose, we thus see that the use of the potash seems a 
distinct injury. 
The influence of the date of cutting the stalks upon the amount of 
sugar is well marked. Thus for the average of the plats: 
