The philosophy of eating. By Albert J. Bellows, M.D.

BLACK AND GREEN TEAS.

209

CHINESE.
Green. Black.

JAVANESE.
Green. Black.

Chlorophyll,
Wax,
Resin,
Gum,
Tannin,
Theine,
Extractive ma
Apotheme,... 2.22
0.28.2.22
8.56.. 17.80. 0.43
tter,. 22.80.....00

1.84.00
3.64
7.28
12.88
0.46
19.88
1.48

3.24
0.32
1.64
12.20
17.56
0.60
21.63.00

1.28.00
2.44
11.08
14.80
0.65
18.64
1.64
18.24

Ext. obtained by hydro- 23.
chloric acid,... J

19.12 20.36

Albumen,..
Fibrous matter,
Volatile oil,

3.00
17.08
0.79

2.80
28.32
0.60

3.64
18.20
0.98

1.28
27.00
0.65

By this table we see why green tea is more injurious
than black, containing as it does nearly one third more
tannin, and from one third to one quarter more volatile
oil, while of the other important element, theine, there
is a little more in the black tea. That it is not theine,
but tannin and volatile oil, that produces tremor,
anxiety, sleeplessness, &c., is therefore proved, black
tea containing most theine, and yet producing least of
these nervous symptoms. On the other hand, I cannot
believe with Liebig that theine or caffeine have any important influence in the change of the tissues or in the
composition of the bile, and "are better adapted to this
purpose than all other nitrogenized vegetable principles."
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