( 751 ) 
It is remarkable how steep the curves of the R.M.W.-numbers 
ascend, how quickly therefore the influence of the beet-foliage is felt. 
On the 22rd of October a commencement was made with feeding 
Nes 1 and 2 with beet-foliage and on the 23¢ of October the R.M. W.- 
numbers of the fat, obtained from the milk, which these cows had, 
therefore, yielded about 18 and 30 hours after the commencement 
of feeding with beet-foliage, showed already a considerable increase. 
The increase amounted to 1.75 and 4.7. After 5 days the increase 
was 5.05 and 9.2, therefore about the same as the average increase 
during the whole period. With the cows Nos 3 and 4 the R.M.W.- 
numbers increased in 3 days with 9.25 and 7.0. 
As appears from the above-mentioned numbers and the curves, 
the feeding with beet-foliage has not only very favourably affected 
the R.M.W.-numters, but likewise the refraction-numbers; these have 
decreased considerably, namely about 6. 
In the second place we may mention here the experiments, which 
have been undertaken to solve the question as to which ingredient 
of the beet-foliage the above-named results must be attributed. 
Owing to the results of one of my investigations, where the influence 
of beet-foliage without the tops of the beets was compared with that 
of beet-foliage from which the tops were not severed, it was probable 
that the favourable effects stated above were due to the sugar con- 
tained in the beet-root-tops. 
During the above-mentioned experiment the animals tock each 
about 1.5 kilo of sugar per diem. One of the next experiments was 
made with sugar only, whilst in a second experiment, with other 
cows, first the effects of molasses and next those of sugar were tried. 
For the experiment with sugar alone, three cows were taken which 
were kept in a stable and fed with 6 litres of barleymeal, 1/, kilo 
of linseed-cake and also with some hay and straw. One of the cows 
served as controlling-cow, the two others, Nes 2 and 3, received, 
in addition to the above-named ration, also sugar. The sugar con- 
sisted of the raw, unrefined article. The daily allowance was gradually 
raised from 0.4 to 2 kilos per cow and then again reduced to 1 kilo. 
Before commencing the feeding with sugar, the fat of the milk of | 
the three cows taken on 6, Stk and 10% January was examined. 
In Table III are recorded the quantities of sugar wich were 
administered, the R.M.W.-numbers of the milkfat and the °/, of fat 
in the milks. 
