New-York tribune., 1874-02-21

In Errope has recently reported the results OF hs
pouiries TO the Academy of Sciences OF I"'E'
while here he spent much time with Mr. Charies '
Rilev. the State Entomologist of Missouri. to whom
we owe great deal of our knowledge OF tlhs u'-
struetiye insect Mr.. Planchon communicates 10
tho Acodemv what he considers three important ob-
servations; first the absolute eertilhU VIZ III, t
American Phyl0JerG the same insect, slco S1
as that which destroys the vines IN op resis the
that certain varieties OF American vines Io9'St ' @
attacks cf the insect third the eXistepcc vi ~ o.,
acaras which purspes the PhyioIea 10, iooi Mr.
INTO the DEPTHS of the SOIL and destroys. IL. w;
Planchon earned back with him some specimens It
this acalus, the acclimation of which he thoueh'
would produce important results
I,sr OF HoRsr-rLrsH IN FRANcE-Ihe commit
zoo for introducing the use of horsecsh into France
rcports that during the first six months OF loo $50
horses asses and ,nules sold IN farls' lhe
weight of which amounted to 10000 kilogranrles.
During the first six months Of 1870 the nunoer OF
animals amounted 70 1892, or $4,000 kllogrammes'
while in the same period of 1873, 5,6l8 anihaiS Weio
exposed in the markets. the flesh alone we9n'hs
sS3S $40 kilogrammes not counting the heart pI'n'
liver tongue etc. which were also used IKE 'hote
of beef cattle. A similar extension OF thc use W
horse-hcsh was manifested IN the provinces i"o
usual price paid by the butchers for these hoIcS
amounts 70 Sos to $50 ca u. the animals Dehg hhtI
only after their period OF utility mas paS.fl, ,,u
when they worth little or n0tnlng a. hdUmndIi |nai
~ as ti'v ~ Il, convorsion into food, have
the food resources of Paris alone increased Dy lhe
amount Of S103,52O. similar eSuialg' odSou uioh ~
fbe entire number of horses sold rs food III the Wh9e
of France indicates that the food resources OF me
country during 1873 will have been increased 10 te
lnount of $4,000: while the saving 10 Va" puphC
% fi,e Inference between the cost Of hOrseiesh and
the more expensive kinds Is OF course much greater
PLASTIC CARBON FOR FmTERs.-AccOrding to
Prof Kletzinsky, two mixtures have been fouhu
best adapted to this purpose IN practlce-the one
consisting of 60 parts of coke 20 OF animal carbon,
10 of charcoal and 10 of pipeclay the other OF ~
narts of coke. 30 of animal carbon 20 Of charcoal,
and 40 of short-fhorcd asbestos The ingredients,
except the asbestos. are finely powdered, passed
through a sieve, and intimately mixed whle dry,
and then mixed with as much molasses or strip as
may he necessary to form plastic mass about as
much as the weight of the dry powder. This dough
Is well worked and then formed into cylinders OF
disks allowed to dry for some time nj a moderate
temperature and then burned in carefully heated
mUtlle, without access OF ar AIIeI oeilI SiomI WI
cooled the soluble salts are extracted ana ine SUI
phide of iron deCompOsed, by placing the artlcIe III
very dilute hydrochlOric acid. The filter IS then
throughly washed in running water, urled ahd aeuh
heated TO dull rednesS in well closed muite, ana
finally shaped, by turning, as may be desired, 1or
! beakeTs tunnels &c Closed hollow vessels can he
| formed by hitting together two suitably shaped yes
| sells Of the substance by means OF certain paste
This is prepared by covering the tuTnings from the
washed masses, tlinlv, with pure slrup made DE
dssolving refined sugar in half its weight OF water
and tTiturating them. The edges of the vessels TO
| be luted are first well fitted together, ana theh
coated with the paste also to fill all the seams
| and the whole. after drying thoroughly IS to be
| burned at a dull-rcd heat While the fused sugar
carbon affords vtreOus mass the asbestos and coke
| aud coal give finness and form the framework
| The charcoal removes especially fusel o ana od0rous
gases and the nitrOgen0us animal carbon eXtractiVe
and cOlOrinC matter Tubes of different matslals
can be firmly cemented TO the filters by plastic sui
plur or good cement, such is made with chalk,
clay and WateT-glass.