The sun. [volume] (New York [N.Y.]) 1833-1916, 1876-08-22
4 CHEMIST AS A WITNESS.
.ur rwPLOyMENT or SCFfNCE TO
CnNVTCT dLLEN LiROS.

So, ro.. Aug u. Tho trial OF Alien
,, ,oisonci his father, mother ana
\ 49, p,r.on to death by putting arsenic III
,n.,. coffee. and endangered the ives q '"o
"s, of a large family, was continued to-uay'
~. cns,ls. Mcintyre, professor OF chein'sV vi
,,,,,, College, described under oath MS ex-
,,,r,tion " the cont nts OF the &C Uce p"t' anu
r..a.,uulchs oftno murdered persons
1tro.,can norton OF the dried substance |
18th h.nl ed water and hSdrochlt ric |
w '' TO oht In a solution. Part OF this
.os hailed VA a test tube, and
-, ,,ti,s sthps of bright copper we're
,a one after another, as long
- 1croslt was formed upon 1t. Here is one
:, ,nose strips Arsenic. anthony mercury
.,fyu. silver. platinum. halladium' gold
''.a.,. acid. tin. under certain conditions, and
.r,,njc MT CT will leave a deposit upon copper
.bcp treated tn tina way. None OF Them now
aver. will produce the characteristic crystallized
t,rms when heated in closed glass tube, ex-
eepting arsenic l accordingly took one OF
these strips Of copper. VI cod It In
;loscd glass tube. heated a. gently. and obtained
octahedrl and tctrahedal cri stal'. Hero Is
The tube containing them. An ordinary pocket
lens Is sufficiently powerful to show them
Another portion OF the solution was treated
with n solution OF sulpeatc OF copper to when
squa ammonia was added. and green precipi-
prOuuCeO-tulS, o-hccien
green. No other metallic substance than arse
mic will produce this precpitlte. Through
another portion Of the solution sulphuretted
hydrogen ras was passed. Arsenic cadmium
lin slenium, aud tellurium produce yellow pre-
eipitates. A yellow procipitate was formed
here which was dried and mixed with eva
plde OF potassium and soda carbonate
and IN a closed gloss tube free from lead and
gently heated. A metallic mirror condensed on
the tube about inch from where the heat was
.ppled. This reaction proved the elbow pre-
rpit,te TO he suohide Of arsenic, and the origi
nal solution to contain arsenic. Here are spec-
mems Of this test-the suiph-nydrc acid and the
tulpn hydro acid reduced. A portion oil tme
original powder was dried at less than 2ls
degrees Fahrenheit. and a portion mixed
Win soda carbonate and potassium cya-
ee md bestsd Ia ,,i SS;ea .,m MIR
u that produced from the sulphide OF arsenic.
Anuthei tune wa. prepared 10 Ike m nner. me
closed end cut on stream OF suiphurcttei N.Y.
drogen passed down over the met llic mirror
ceuosit. at the same time gently healing II.
yellow deposit was found on the tube beyond
Tic metallic deposit. lhis AGAIN Is lhdicatNs 81
Arscnic ana the sub.ieuces are mere marked
reduction nnd Reduction with sulphuric
scid.' Another portion OF he powder wes heat
ed In closed glass tube. IL all vol tilIed. com
deusiqe q. ne mo ,des OF ,ne tuos, ,ofdnins
the characterisuc crystals OF Msehl'is ac'n.
Next topk portion of the substance rom ne
sor,s pot, gwen me 10y Df JHrel'' w9Te
through precisely the zane tests. and GOT ex-
nclly the sane results N every Instance. Next
teNamincd the contents OF the coffee pot IL
~ coated With white sedment.
Inc coffee pot was coated on the bottom
and dong the sides with a white powusr. re.
moved some of 1t by riusing with cold distilled
water, pouring it out into glass vesss l' and al
lowing the hoauug particles T. sunsue. Pour
H., N tnc liquid. obi nluei another white pow
Der, Of whcn thl- Is a sample. portion OF THIS
powder was treated In precisely the same way
4 we're the other two. and with the same re-
tults IN every instance. The sediment deposited
In tue coffee pot On the bottom sud up
Hong the iiont ~ II lett there by the pouring
out II the liquid In the pot. You see II SIN
non u tne liquid passed sulpuretted nv
trugen. and aciduated II with hydtochIorc
lid. dried the resultant pfecipite, heated
in a tube, and obtained the metallic
mirrors as before Another portion. acidu-
sted with h,drochloric acid, was tested 10y
Re!nsch's method. coating tue cooper strins,
kbicn subsequently, gave on tue CHARACTERISTIC
tT,stals Of Dr-eniOus acid. Next L applied
hsrsh's text. took a risk provided with ruo
Der stopper having two perfpra,ions. through
que Of winch flannel tube was passed. and
through the other pettoTattOn a glass tube, bent
o. nRht ANGLES. connected WITH another glass
tune, in which were pl ICED somo pieces % cot
ton wool AMI fused calcium chloride Ihis III
turn was connected with another glass tuue
oeut near the extremity at right aneies: ana TIE
mi drawn out to form hue jet. Zinc was
pla ced ia the II Ak, and through tue funnel IL
m.e suipuuric ccil was poured inc scion ol
uie sGlpuuric aci on the zinc u To generate nv
ifu.en gas. his was carefully tested, add wa
iunnd to be ahsolut " pure; spah portlpn o
Re suspeo ted liquid one Coffee was CURED int
Ihe Ask through the funnel A s'rp ~ me
bp.r, nIoi-ten-d with a solution 81 nitrate 4"
nv T., held above tue jet. ~ was luiltln
tAtel, turned black. AG-euic does thls lu
YET VS. then reversed and placed ia TUT
containing a solution OF hhifats OF shNei
A black preclpitate immed ateN formed. IN
may be produced 10y arsenic or All ihohN.
TOOK the liamd from the preclpithte' adue'
sarcfIiN az AT NOAH, and obtilueu Ntlu'
prr .ipitate. mat WAS arsenic, aud MT dut
nuuy. farming the Jet upfieh! az IN 'gnste
N. dame AMI obtained series OF met ali
Ipots OF mirrors, similar 10 tins one These
pa ed ia lItion OF chiOrnate OF SOD
Inyy we've dissolved, indicating that they wef
ns ne, aud OF anllm"ui, placed unGer tn
One tub. nefD described a nshicl lamp u
.he nask side the tuOe. There were ,rmc
net nc .ing- only on IL i SIDE OF Tue t9pe &C
over one | passed a stream Of sulphuretie
h,arosen s. IT ths same .line gently health al, u
E.r deposit. yellow deposit was formed o
he glass beyond the LAMP. From my tests
~ nd mi found in the nee pot the whit
uernic OF the suo,s, or arsenious ACID. III
~ MUD contained arsenic III some FORM.
- made qdenttatlNe analysis. a nul
b..e II inc 10 lil contained we've and a q al
H. - .tu- Of Arsenic. Coli water VIII take u
ibo II b~lf grain 70 the Iuid ounce OF ar-eni'
fn- greatest q i,ntity OF arsenic taken up
sonng water, after an hours boiling Is aOou
IitY grains to The huid ounce ms must nav
s4n.uNh. d coffee dOes not take ~ 80 much
% readily a. pure water. l mixed together
q rt- coffee, 81 senlOus ACID, and OF wal
uii bOned tnem a quarter of an hour. apple
boue u II TO my toh-ue, WINE nV
All. in a minute felt a pungont sensation on u
toAeue. "eli described as peppert. ia ihlhu
a. uaif fvitt suarDN On my lips. lhen
washed NY iAuNLi, bNN seven minutes hit'i "a
stu a. Nsry puuEtut sensation. AID twei'
inmates alter the sensation resembled nu'
Ill 1 Produced ~ weaN la turr OF ginger.
Icte.ied tue eGprumrht ~itn The same sol
tiuu At 81 II had stood about forty-eight hou
~ in ABOUT uILais aEaln ekpericnced II
pclDcr, sensation on mN tongue, Uut not
plainly as wbou the uquld Wds lot
A." maze IN an lbsi- OF the Nl-cerl, stomac
am contents Of III. BODY Ut Mdrdn l.aTOs.
pi T.. d tho stomach and lisce OF the suli
h. c-lue IN orceiain dishes. similar por io
of the UodS II h.Ty AM J. irOs were placed
Oturr d-hts, and lubelled properly 80 That III
yLould 1 get NIX 81. went 10 work on 4
UotnucA OF .dartiu l. rus 1rst. It's exterior "
Redeemed Ia sputs, aud ~ a general dull bros
soiDr. ! empued the contents into anoth
aish and examined the Inning membrane
bret looked to see II could mud ans sllid par
lo~ Of material cllnging t. tins membrane.
lounI none. The condition OF the mel ura
next drew my attention. HERE were uumeru
Imall, dark brown, elDngatel spJts giving
mat part of the stomach a siridisd aIpoaEdu
Distinct from these was reuness, best seen
holding tho stOm CHI up to the lght, when
IOud-yessels were seen to bt very much Gu
rested. In two or three places ths Muce
nsmOrane had raised up, very much IKE
bn.ter. The stomach and intesllnes we're
W Into very small pieces and heated, with "a
ponteut-, with the addition OF moderal
Itr NJ hydrochloric acid They were LETT