42 ROYAL SOCIETY OF CANADA 
The comparative data, drying at 98° C. in steam bath, using 
asbestos in glass tubes, are as follows :— 
24 hrs. 48 hrs. 72 hrs. 
Percentage of Moisture . . . . 31°34 36°25 40°01 
ms oe 31:90 36°90 40°53 
DRYING ON (a) ASBESTOS, AND (b) SAND, IN PLATINUM DISHES, 
IN PARTIAL Vacuum AT 60° C. 
In all respects, save that of temperature, the conditions of drying 
were identical with those of the preceding series. The results, given 
in Table V., appear to show that at this lower temperature (60° C.) 
24 hours drying is sufficient for perfect desiccation. As at 70° C., 
however, the percentages obtained by drying on asbestos are somewhat 
higher than those when sand is used. 
TABLE V. MOISTURE IN HONEY, FROM FuLLY CAPPED COMB, AS DETERMINED IN 
PARTIAL Vacuum AT 60° C. 
Solution: 59°8312 grms. honey in 500 c.c. (approximately 12%). 
Moisture in honey, as calculated from Sp. Gr.—17:08%. 




ABSORBENT Shape of 
ear Dish 24 Hours 48 Hours 96 Hours 
Sand F.B. 16°88 17:13 17°28 
R.B. 17:62 17°84 18°04 
Asbestos F.B. 18°88 19°24 19°65 
R.B. 18°65 19°20 19 52 


The same solution dried on asbestos in glass tubes at 98° C. gave 
the following results: — 
24 hrs. 48 hrs. 72 hrs. 96 hrs. 
Percentage of moisture .. 26°27 29°21 30°67 32°26 
ci a 24° 66 27°26 28°90 30°33 
A review of the results in the foregoing tables allows us to con- 
clude :— 
(1) That in drying a solution of honey in glass tubes on asbestos, 
a temperature of 98° C. at atmospheric pressure induces a consider- 
able and continuous dehydration of the levulose, resulting in an 
apparent loss of moisture far exceeding the real amount present. 
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