372 On the Chemistry of Silesian Sugar-Beets. 
It is to be regretted that I had merely the opportunity of 
examining sugar-beets grown in only one locality of Devonshire, 
The red-skinned beet, it will be seen, contained 89 J per cent, 
of water, and yielded 5J per cent, of sugar; while the white 
Silesian beet from the same place was still more watery than the 
red, and produced only per cent, of sugar. 
Equally poor in sugar to the Devonshire roots 1 found some 
sugar-beets which the late Mr. P. H. Frere raised in 1865 from 
four varieties of French sugar-beet seeds on his farm in the 
neighbourhood of Cambridge. 
These roots on analysis were found to have the composition 
given in Table XI. 
TABLE XI. 
Composition of Four Varieties of Sugar-beets grown from French 
Seed, by the late Mr. P. H. Frere, near Cambridge, in 1865. 
No. 
1. 
No. 
2. 
No. 
3. 
No. 4. 
Toupe Blanche 
Blanche 
Eose 
Toupe Rose 
choisie. 
commune. 
ordinaire. 
choisie. 
89 
34 
89 
42 
90 
G3 
90^47 
Crystallizable sugar 
* Soluble albuminous com-'i 
5 
22 
5 
90 
3 
94 
3^54 
1 
75 
1 
19 
1 
63 
1-76 
f Insoluble albuminous com-'l 
31 
31 
12 
•25 
1 
72 
1 
70 
1 
60 
1-77 
21 
08 
SO 
•78 
Soluble mineral matter .. 
1 
•38 
1 
33 
1 
13 
Insoluble mineral matters 
07 
07 
15 
•15 
100 
•00 
100 
•00 
100 
00 
100-00 
* Containing nitrogen 
•28 
■19 
•2C 
•2S 
■f Containing nitrogen 
•05 
•05 
■ Ll2 
■04 
In raising these roots no particular attention was paid to 
the condition of the land. They were grown like ordinary 
mangolds, with plenty of fresh dung, and no doubt owing to this 
cause they were not better than common mangolds, and were 
unsuitable for the manufacture of sugar. 
It will be noticed that nearly the whole amount of the albumen 
and similar nitrogenous compounds existed in these roots in a 
form soluble in water, and that the mineral matter or ash like- 
wise consisted of salts which are soluble in water. 
Not only in these, but in all sugar-beets and mangolds 
which I have examined, the albuminous compounds and mineral 
matters occur almost altogether in a soluble state, and conse- 
