94 
On the. Couiposition of two varieties 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 Purplo-top Kold-Rahi. 
a. General Composition. 
Green-top. I'urple-top. 
Water .. 86-020 89-002 
Substances soluble in wator 9-2fiO) Dry matter 7-588"! Pry matter , 
Substances insoluble in water 4-720i 13-98 3-410/ 10-998 
100-000 100-000 
b. Detailed Composition, 
Green-top. Pui-ple-top. ' 
Water 80-020 89-002 
Oil -227 -177 
*Soluble protein compounds 2-056 2*006 
Sugar, gum, and pectin 6-007 4-486 
Salts soluble in water '970 -919 
flnsoluble protein compound -300 -269 
Digestible fibre and insoluble pectinous I 9-993 1-896 
compounds ) " ^ 
Woody fibre (cellulose) 1-230 1-106 
Insoluble mineral matters "197 -139 
100-000 100-000 
*CoBtaining nitrogen -329 •3-21 
tContaining nitrogen -048 -043 
Total nitrogen -377 -3G4 
Percentage of ash 1-167 1-058 
It must not be infeiTed from the precedino^ analytical results 
that purple-top Kohl-rabi is necessarily more watery than the 
green-top variety. My observations only apply to those bulbs 
which 1 had an opportunity of examining. A series of de- 
terminations 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 acci- 
dental occurrence of a smaller proportion of water in the root 
which was submitted to me for analysis. 
It is well known that the proportion of water in roots drawn 
from the same field and growing in close proximity to each other 
varies much. All that can be said, therefore, is, that the par- 
ticular specimen of the green-top variety which I analysed was 
less watery and no doubt also more nutritious than that of the 
purple-top. 
Tlie following table gives the composition of these two varieties 
of Kohl-rabi in a perfectly dry state: — 
