The times. [volume] (Richmond, Va.) 1890-1903, 1899-07-30


up Of the tissues. The dish with its con-
tents is placed in Tin oven into which
p thermometer can bo inserted. 10 is
heated with occasional stirring 90 100
lll degrees centerale. Tho heating is
continued for two hours. with the tom-
perature gradually raised t1 lW degrees.
At first the tissue assumes yeIowish
hue and cnlarcos becoming quite thick.
but changes again 20 n liquid appearance.
The heat Us maintained until rtd color
results. when a quantity of suiphuric
acid is added with vigorous stirring
Tho mass becomes brown. and abundant
fumes are given of. The arsenic is not
volauized and none escapes. More SUE
phuric acid drop by drop. is added 10
destroy the organic matter as completely
ass possible. 10 IFS heated for fifteen min
utos ar zoo degrees. There remains
hard. c1rb0nace0us mass in which the
arsenic exists ass the soluble oxide The
mass is repeatedly treated with boiling
water 10 extract the arsenic The water
hou.d De in contact with the black resi-
due twcnty-f0ur hours to remove an the
poison. When that which remains after
The treatment with hot water is quite
large it is again oxidizad with nitric and
Ilphurc acids and treated with hot
water ms no first The reddish brown
water extraction containing the arsenic
and some organic matter is eyaporated
tO dryness and the residue Is dissolved
boo dilute sulphuhic acid with gentle
heat
MARSUS METHOD
Inc arsenic IS now in n condition 90 De
determined quanutauvcly. Marsh's is
fly0riie method. This calls for am appa-
ratus for generating hydrogen gas by
the action of dilute su,phuric acid upon
zinc with The gas passed through cai-
cium chloride and sulphurc acid TO dry
Il.
Tho solution containing arsenic IS slow
ly dropping into the hydrogen apparatus.
and the dried gas with the arsenic IN
combination Us further passed through
hard glass tube which Us heated with six
Buuscn burners The heat decomposes
the arscnical compound and the pure
metallic arsenic is deposited on the tube.
The part containing the arsenic Is broken
off ana weighed. The poison is next re-
moved from the tube by diss0iying IL I'm
nitric acid. The tube is then carefully
washed. dried and weighed. The differ
once between the two weighing is, OK
course the quantity or arsenic.
THE CHIEF ORGAN.
The stomach Kidneys and liver arc the
The stomach is the least important of
aH. because the poison found IN &c did not
cause the death The harm was done
more especially by what was carried by
the circulation 10 other organs The
arsenic found I'm the stomach could in-
deed have been maliclously injected after
death 90 cast suspicion upon am enemy.
II is said that such cases are on record.
The annual tissue can also bee destroyed
I'm the organs that are 20 DE examined
for arsenic by treatment with potassium
chlorate and hydrochioric acid. The
chloride which is thus generated readily
accompf hes the desired object.
IL ie hardly necessary 10 add that all
the chemicals employed DID an arsenical
must be entirely free from
that poison. In general solutions Of the
chemicals are treated with suiphurretted
hydrogen which has the power TO pre-
cinitate any arsenic that may be con-
tanned The precipitate can be removed
by filtration.
SOME SIGNS.
The Irregular distribution OF arsenic IN
the body and its occurrence IN larger
quantity I'm the important digestive or
gans indicates that the poison YVES ode
mlnistercd only shortly before death;
while n regular distribution through all
parts OF the muscle shows more or
less continued use before the death OF
the Individual.
Professor sutton Of the University Of
in am admirable series of
governments. has shown that arsenic in
iectod I'm the mouth after death will find
it's way TO an parts Of the body, even
the brain and spinal cord.
fluids. likewise. will dis
seminate throughout the body. About n
third OF the fluids now upon the market !
contain arsenic. and the difficulty OF de-
,octine a criminal act IS thereby en- !
HANGED.
PRUSSIC ACID.
Prussic acid in the body IS not difficult |
NJ detection. The internal organs are |
treated with water which is then distilled !
with a simple Liebig Condenser. The
first portion Of liquid TO distil over con- |
tains most OF the poison, which can be |
recognized by its oder or better still, by |