New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1869-06-30
SCIENTIFIC NOTES.

TEST FOR GLYCERIN.-The increased use
t vcern in the rts Of has Of course brought INTO
The market an adulerated article. When sugar ana dex
tripe were mixed in small proportions with gyeern u
has hitherto been difficult to detect the adnteratl9n Du
easily done by the following ld 10 ZOO rops of
wafer one dTop OF pure nitric acid and three to Tour cen
FSTsmHes of ammonium molly bdate and boil the mix
ure and in less than two minutes u VIII assume uooP
s blue color II any sugar or dextrine Is present
PORTABLE ILLUMINATORs.-M. Alvergniat n
French electrician, has made Improvement hrst sug
ysted 10 him when usg the tubes invented by Giesser
which are cylinders Oubs Of glass filed with rarhed
gas that luminous in the dark when current :"
Feerleity is passed through it, The 1inrroVelnent cor
cd Win substance which becomes phosphorescent
by the action Of fricon2l or static electricity tu1e Oh
tits kind NAV be TO those on night duy
FOR all that is requisite to produce feeble ana epeea
light is to rub the tube brsky with SILK handkerchief
TEMPERATURE OF THE BLooD.-Dr. D. 5.
Lombard has applied his delicate thermo-electrc up
paratus to the study Of the effects Of respiration on 1ne
Temperature OF the blood and has found that very cu
and dry air taken into the lungs does not lower the tv
perature Of the blood sufficient 10 affect his hypin
which will indicate any change Of Temperature eAesu ,
i2O OF degree ccntigrade; and this may oe % ~
ed for by the fact that at ow tempeauses tnS i in
more condensed and larger proportion OF & 20
hailed. and 10y its conversion larger anoui' VI H'"
generated.
AQUA REGIA AND METALLIC SULPHIDES'-
Mr. Lefort fluids that when aqua rega is paeeu III cou
att with sninhpr or with metallic containing sui
on ~ tho bvdrochorc acid but soon after the htst
pOmnOund Is destroyed by the nitric aclu, anu M o ~
Gas Is sci free while suphuric acid Is formed me Der
6%noTons of the mixed acids for securing rapid deco
Oosition OF sulphdeS Is one part OF hyulOcholS anu
Hif three parts Of nitric acdi the reverse o 'noSe III
prinarT AQUA reea, which consists OF three OF hydro
chlUfic aud one VI nitric aed'
CEMENT TO RESIST RED HEAT AND BOIL
mo WAFER German Journal gives two processes tor
making these Clements lst TO four or five parts OF cay
thoroughly dried and pulyerzed, add two parts OF iron
i1a NJ
oue.half part Of common salt and onebalf Of DoTaX
These ale rubbed together and made as me as puso
II ,nuet he applied Immediately and then gradually
healed almost - q white heat. I'd. To equal parts oil
~ zinc and su fcent quantity Of scae Of soda water
glass TO form thin paste. This mixture should also oe
durable as that obtained by the first method
WurN TO SwEETEN TARTs.-Dr. Letheby,
I'm ms lectures on Food states that common canesuSars
ndueratcd in Europe by means of sarchsugar OF even
starch itsc. sarchugar or as It is sometimes calea
grapc-sugar glucose has low sweetenihg poMeL,-o
half great as that Of cane-sugar-lh 9o IL Is lSIuV
Tic latter by the action OF vegetable aglHs "u l.
when cauesngari Is added toIrult IN naAIug ~
fruit pie and IN making jelhes and Jams IL rs Iaise
economy therefore sweeten 70 any extent before Tue
tart s baked some American housewives nave ulseQN
cred by practice in making rhubarD pies, which require
large amount Of the sNeetening principle hat gwen
nanty of sugar will be effective when the largest
PORTION applied to the pie after IT has been taken from
he oven, 100 -'-'F '~Ssfs v-~r~'-''
70 ~PrpGuE1RA.-The oil known among inc
Portuguese by TINS uainc mas IcCtHhy "NO S''tNN'N
governments by Bous 1t contains about six per cent OF
nitrogen which, on dstilaton, is evolved as ammonia
As possesses some Of the properties Of castor OIL ana is
obtained. like the latter from plant belonging 10 tHe
Epurrc family euphOrbacc0 he was led TO dlst " WIN
an alkal ana the result OF sapOnheaton ana uleato
Was an ufammablo complex liquid having an srHn 9
Odor The portion passing off between l1S' ana ~ -,
has the same composition as caprync alcohol Wlch s
found ia castor Oil Ihe pant yleuinE IL rpdeT
described by Adanson, more than century ago, uuor
the name of CtTcdS ptTgdnS II abounds IN some POI-
tions Of Africa and in the Cape de Verde Islands
AKAZGIA.-Ths new alkaloid was found by
DR. Frazer of Edinburgh, in specimens Of the Akazga
plant brought from coast Of Africa, and which
he supposed to specis Of stychnos Akazgia Is
a crystalline alkooid closely resembling strychma, but
differing from by being precpitated by alkaline bcar
Travellers report that the natives OF west Africa
Akazga as an ordeal supposed soIcteI y COM
walk over small Akazga sticks. IL guilty. he tres IN yam
10 pass Che sticks and falls in commissions, when ne Is
beaten death by the savageS but II innocent the kl0
neys will act freely and the poison is Thus eliminated
DT Frazer found certain twigs OF the sOealed Akazga
OF different ncture, which did not yield the new AKA
lod, and IL probable that those natives who have es'
capeo from the ordeal drank Qecocuon made from this
variety. f3i-5 - 2sS3sft "at-
NEW AND GIGANTIC PLANTING London
Builder OF March states that within the last few days
living specimens have been forwarded TO England from
Of one Of the most gigantic plants OF the veg
etabe kingdom II is closely allied 10 the ATums Tor
Iords and Lades) OF the hedges and until the present.
fine has wholly escaped the notice OF travelling bohists
IL produces but leaf nearly IA fect IN length SUP
ported by stalk feet long The stem OF the Hover
foot In circumference the spathe or hover Two icJ
long purplsh blue I'm color with pOWeIni caIIOhIhe
Od0r As this remarkable species OF ArOlde8 is qulle
10 has not yet received name. COT
respondent OF The Buder describes the Arum found on
The Campagua Of Rome which bears deeply seIrated
leaves about the size Of the human hand but in other
RESPECTS resembles the NCaraguan plant IL has puI
pe spathc about Is inches III length ana the mower mas
The same repulsve odor