598 COMPOSITION OF KQiiI.-KABI AND CATTLE-CABBAGE. 
it is my intention to examine this season a large number of 
bulbs of Kohl-rabi, I shall at the same time direct my atten¬ 
tion to the composition of the leaves. 
In the mean time the subjoined analysis of two varieties 
of Kohl-rabi may be of some interest to those who intend to 
grow this crop. The bulbs were kindly supplied to me by 
Mr. I nnes, steward to Colonel North, who was a successful 
grower of Kohl-rabi last year, and has formed a decidedly 
favorable opinion of its practical feeding value. The varieties 
analysed by me are known to seedsmen as the Green-top and 
Purple-top Kohl-rabi. 
Composition of Green-top and Purple-top) Kohl-rali. 
a. General Composition. 
Green-top. Purple-lop. 
Water . . . 86-020 89-002 
Substances soluble in water 9'260 1 Pry Matter. 7 4 588 1 Dry Matter. 
Substances insoluble in water 4720 J 13*98 3'410 1 10*998 
100*000 100000 
b. Detailed Composition. 
Water . 
• 
Green-top. 
86-020 
Oil 
• 
•227 
^Soluble protein compounds 
• 
2-056 
Sugar, gum, and pectin . 
Salts soluble in water. 
• 
6-007 
• 
•970 
-{■Insoluble protein compound 
• 
*300 
Digestible fibre and insoluble 
pectinous 
| 2-993 
compounds 
• 
Woody fibre (cellulose) . 
• 
1-230 
Insoluble mineral matters 
• 
•197 
^Containing nitrogen 
• 
• 
100000 
•329 
-{■Containing nitrogen . 
• 
• 
•048 
Total nitrogen 
• 
■ 
•377 
Per-centage of ash . 
• 
• 
1-167 
Purple-top. 
89*002 
•177 
2 006 
4-486 
•919 
*269 
1-896 
1-106 
T39 
100-000 
•321 
•043 
•364 
1-058 
It must not be inferred from the preceding analytical results 
that purple-top Kohl-rabi is necessarily more watery than 
the green-top variety. My observations only apply to those 
bulbs which I had an opportunity of examining. A series 
of determinations of water in a larger number of bulbs of 
each kind probably would have proved that the apparent 
superiority of the green-top variety is not real, but due 
entirely to the accidental occurrence of a smaller proportion 
of water in the root which was submitted to me for analysis. 
