( 750 ) 
PA Bil Eh; 
| | | | | ole of Fat 
| Num-! | | | R.M.W.-number. : lo © Ai 
| | | in the milk. 
| Age (ber of Calved Conceived : Yield of | i adn eee ae + 
NEE | in | times | in 1901 | in 1901 | milk per | zE ij Tr rd z 2. 
| | | < ' EE AG S 2 | oO 8 IE & 
|years.| of | on on diemen ese sale noes APS = 
| | | [5484 ei & EZ EES 
| calving! Ses Sea. B ean EME 
| pice Tl CEI A SS) One 
| } | | > | 5 >= 
<2 : < 
1 4 8 | 20 May | 20 July + 10 L| 20.4 |25.6') | 5.2 | 2,94 | 3.18 
2 2 | | 16 March) 19 June |+ ò » | 19.8 129.—')| 9.7 | 3.45 | 3.73 
3 | 3 | 2 |7 April |S July 46 »| 14.8 (24.82) (10.—| 3.6 | 3.8% 
| | 
4 3 DS b> otd Ne DA LOE —)| 7.— | 3.74 | 4:08 
| | | 
The above-mentioned figures show, that a considerable increase 
of the R.M.W.-number average 8, that is about 44°/,, has to be 
recorded after feeding with beet-foliage. With the two cows, which 
served for control from 22—29 October, the R.M.W.-numbers 
remained pretty constant during those 7 days. The figures given 
above also show, that the great influence of feeding with beet-foliage, 
which has been noticed with the cows Nes 1 and 2, between 22 
and 29 October, was confirmed with the cows N° 3 and 4 *). Among 
the 4 cows there was one the milk of which yielded a fat containing 
but a small quantity of volatile fatty acids *). With this cow the 
R.M.W.-numbers ranged between 13.6 and 15.05 before the feeding 
with beet-foliage. 
Of the results contained in Table I a graphic representation is 
given; in fig. I, the dates when the samples were taken, are put 
down on the X-axis and the R.M.W.-numbers on the Y-axis; in fig. II 
likewise the dates on the X-axis and the refraction-numbers on the 
Y-axis. 
') This is the averagefigure calculated from the R.M.W.-numbers of the butter 
of 26 October, 28 October and 2 November. 
*) This is the figure of only one sample. 
5) It must be observed that the 0, of fat in the milk rose after feeding with 
beet-foliage and that the amount of milk yielded by Nos 2 and 4 remained almost 
the same, but increased greatly with Nos 1 and 3. 
*) It is evident from these as well as from several others of our experiments, that 
the amount of volatile fatty acids in milkfat is greatly dependent on the nature of 
the individual cow and that under unfavourable circumstances this is probably the 
case in a stronger measure than under favourable ones. 
