144 "

The following is the result of an analysis of the fresh leaves of
tobacco, by Posselt and Reimann ("Mag. Pharm." xxiv. xxv.):--

Nicotine 0.06
Nicotianine 0.01
Extractive matter, slightly bitter 2.37
Gum, with a little malate of lime 1.74
Green resin 0.26
Vegetable albumen 0.26
Substance analogous to gluten 1.04
Malic acid 0.51
Malate of ammonia 0.12
Sulphate of potash 0.04
Chloride of potassium 0.06
Potash combined with malic and nitric acids 0.90
Phosphate of lime 0.16
Lime in union with malic acid 0.24
Silica 0.08
Woody fibre 4.96
Water (traces of starch) 87.21
------
100.10

Dr. Covell, in "Silliman's American Journal," vol. vii., shows its
components to have been but imperfectly represented in the above
German analysis. He found in tobacco by chemical examination--1, gum;
2, a viscid slime, equally soluble in water and alcohol, and
precipitable from both by subacetate of lead; 3, tannin; 4, gallic
acid; 5, chlorophyle (leaf green); 6, a green pulverulent matter,
which dissolves in boiling water, but falls down again when the water
cools; 7, a yellow oil, possessing the smell, taste and poisonous
qualities of tobacco; 8, a large quantity of a pale yellow resin; 9,
nicotine; 10, a white substance, analogous to morphia, soluble in hot,
but hardly in cold alcohol; 11, a beautiful orange red dye stuff,
soluble only in acids; it deflagrates in the fire, and seems to
possess neutral properties; 12, nicotianine. According to Buchner, the
seeds of tobacco yield a pale yellow extract to alcohol, which
contains a compound of nicotine and sugar.

M.M. Henry and Boutron Charlard found in 100 parts of

Cuba tobacco 8.64 of nicotine.
Maryland 5.28
Virginia 10.00
Ile et Vilaine 11.20
Lot et Garonne 8.20

quantities from 12 to 19 times more than were obtained by Posselt and
Reimann.--"Ure's Dictionary of Arts and Manufactures."

The following a