NOTES ON THE 
METABOLISM IN THE CHERRY 
TREE. 501 
more correct estimation as to the changes can be obtained if we 
take the fibre as a ■ 
constant quantity, 
which may here safely be 
done, and recalculate the numbers for 
proteids, fat, and carbo- 
hydrate. We obtain 
now the following 
results :— 
(A) 
(B) 
Fibre. 
100.00 
100.00 
Crude Proteid 
2741 
17.16 
,, Fat . . . 
19.67 
13.70 
Carbohydrate 
77.98 
46.33 
Hence the proteids decreased . .. 
37 - '6 % 
Fat decreased 
30.35 
Carbohydrate decreased . 
40.59 „ 
This shows that the bark of the twi 
gs plays a very important 
part as a reservoir foi 
• the development of the buds in 
1 spring. 
A nalytical Data. 
Determination of total nitrogen. C1) 
Dry matter, g. Baryta-water, cc. 
Percentage of 
nitrogen. 
Bark (A) . 
6.70 
I.52 
„ (B). 
5-30 
I.07 
Leaf.. 
—\ 0.883 
27.90 
5-59 
Flower .... .. 
. O.879 
l6.00 
3.22 
Determination of albumoid nitrogen by Stutzer s 
method. 
Dry matter, g. Baryta-water, cc. 
Percentage of 
nitrogen. 
Bark (A). 
5.40 
1.18 
.. (B). 
. O.89O 
4.20 
O.84 
Leaf. 
22.70 
4-55 
Pd 0 wer . 
I I 90 
2.40 
Determination of crude fat. 
Dry matter, g 
r. Crude fat. 
Percentage. 
Bark (A). 
.4728 
0-3235 
6.84 
, (B). 
. 4449 
O.2377 
5-34 
Leaf. 
. 4-415 
O.397O 
8.99 
Flower. 
.4-396 
0.4415 
IO 04 
(i) All the nitrogen determinations were made by Kjeldahl's method. 
10 cc. of sulphuric acid were put in the receiver. 
In the case of bark (A 1 *; i cc. sulphuric acid =3.16 baryta-water solution, and 1 cc. 
baryta-water = 2.14806 mgr. nitrogen. 
In the case of bark (B', 1 cc. sulphuric acid = 2.i6 baryta-water solution, and 1 cc. 
baryta-water = 1.77115 mgr. nitrogen. 
