on the new Substance called Iode, or Iodine. 145 
If the operation is to be performed on a tolerably large seale, 
that is to say, if a pound, or pounds, of the partly-desulphuretted 
salt are operated upon at once, the process is most commodiously 
performed by means oi an aleimbic. The iode sublimes in the ca- 
pital of the alem!ic in beautiful prismatic needles, possessing a 
metallic splendour ; and the residuary saline mass may readily 
be removed by the assistance of warm water. 
If two or three ounces of the salt are submitted to the opera- 
tion, the following process is convenient : 
Take a flask holding three times the bulk of the salt, adapt 
to the neck of it, by means of luting, a glass tube about 12 or 18 
inches long, and from 3-8ths to half an inch in the bore. Pour 
into the flask first, two parts of sulphuric acid, and then, one 
part of the uncrystallizable salt containing the iede. A violent 
action ensues, and the flask becomes filled with a derfse violet- 
coloured vapour. When the action has ceased, apply a gentle 
heat till no more violet-coloured fumes become disengaged. 
Then remove the tube, into which the iode will be found sub= 
limed. Wash out the crystals with small portions of water, 
and dry the product without heat on unsized paper, placed on 
a chalk-stone. The iode thus obtained is not pure. It is 
usually soiled with some sulphuret of iode, and hence has a 
strong odour resembling chlorine. It stains every part of the 
skin, and other animal matter, with a bright orance colour ; the 
stain lasts for some days, and only disappears by the natural 
change of the cuticle, so that in dead matter it is indelible. In 
this state it becomes converted by heat, not into a violet-coloured 
gas, but into a rose-coloured gazeous fluid. 
To obtain the iode in a pure state, mingle two parts of it 
with oné of chalk freed from water by a previous exposure to a 
moderate heat, or with quicklime ; put the mixture into a glass 
tube, eight or ten inches long-and three quarters of an inch in 
the hore, furnished at one extremity with a ball, and then re- 
sublime the iode into the colder extremity of the tube, by heating 
the ball of the tube over a spirit lamp. 
ANOTHER PROCESS. 
Having obtaineéd the uncrystallizable saline mass containing the 
jode in the manner above stated, redissolve it in three or four 
parts of water, and add to the solution, sulphuric acid in excess; 
then evaporate the mixture again to dryness. Ming!e the dry 
mass with about one-third of its weight of finely powdered red. 
oxide of lead or black oxide of manganese, and distill with sul- 
phuric acid added in excess, in the manner before directed. 
lode is to be found in abundance in the waste or spent lee 
of those soap manufacturers who employ kelp in the prepara- 
Val, 43, No, 190, Leb, 1814, K tig 
