New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1875-05-28
that thu su Instance obtained by Iebroc OF l'ertn IN


BRAN matter, containing phosphorus and NITROGEN
and IA which he gave tue name of protagou, Is
really composed Of these two substances while the
organic base found by treatment of this brain
matter md called nv him neurne, h simply tho
nroduct of the decomposition of lecifhine. which
when separated is homogeneous, TRANSLUCENT SOFT
substance When heated II swes, ana II inc ZEN,
perature lie high enough. gives on nnIindnlac,,i
ctlcr chlorofor,n carbTi-sulphide, and benzne.
Curebrine exists in brain n'ntter, from which u -
extracted by boiling alcohol Ii IS treated WIN
ether Ia remove the fatty matter. a,d pufhed from
lccifhinc aud lime phosphate by repeated solution
in boiling alcohol. Il is solid NOTORIOUS coiorless
body, AMI IL but little affected ny o'hci'
rvrEEIuENTs on TIE ADHESION or FLAT
Pr,T,s-Stefan states that the phenomenon ut the
ppar,nt adhesion of Hat plates has been hitherto
considered "a be result of tho molecular forces be-
tween the particles OF the two plates Tue plcnoine-
non H. however, he contends, not state, but
dynamic one. The experiments made by nm nave
shown that the ecparation of the Two pates can pe
,,rtod Inv ary force whatever but that the time in
which the distance Of tho plates Is changed by a
measurable quantity, by tho action of any force is
greater ~ the force is smaller From this point of
view IL Incomes easy " describe In general the
ture of the phenomenon that takes place. When the
separating force begins g. act te distance between
Tin, pate reserves an Infinitely small increment
th,Icl, Che spa,e limited 10y the plates Il augmented
aud the fluid within undergors dliHtati"l III con-
sequence Of which the hydrdstatle pressure ieconrs
l,.ss The exercise OF pressure of the exterior fuid
ortS in nnnosit0u 10 the separating force uever'r
less ennh does not cnsne, because the dIlnnu
tinp ot fine hyirosatic pressure between the plates
Los for IL, r,sult a lowing in of the exterior fu
and hence dininution OF the difference OF the pres
surcs.
THE JURISDICTION OF AN ANGLE.-The problem of
the tri-secton of q circular has lately been
solved bv Dr. IIippauf in simple manner by means
! of ~, auxiliary curve which may he designated rs
the oonchoid on a circular base. The circular con
choid is The locus of Il series OF points found by
drawing through extremity of the diameter OF u
circle series of lines, AMI finding upon each that
roint which il nj distance from the circumference
of the circle cqnal tn the radius Having described
such circular conchoid for the circle, are OF
which we wish to tTsect, we draw tue chord belong
ing tothe latter are and then through the origin vi the
conchoil parallel chord this latter il equal to the
chord If The third part of the 10 be tlsectad
Three other method. OF ellrctug this trisectpn
also rvon 10y lippluf 10y the all of the same
and many other curious properties are found by
Prof Sder. who has shown that tins curve may
also he esrribcd the locus OF the feet uI series
of ucrpcndc,aTs let Iall unOn all PosSb tauyeHts
to circle, from poiut outside the circle, and at
distance from the center tierco equal 10 Ms dtne-
ter. The concn0d is likewise easily described
graphically by "A point flstrn,d 10 given circle
which rolls around yo'i circle providfd thar the
point be fastened the rolling circle At distance
from lis center equal to tho diameter thereof.
THF HEAT PROpUCED ny GALvANiC CURRENT
Since the galvanc effect upon metal wires, 10y mcas
If which they are male t. glow. has acquired prac
teal importance in glvann-causticS Il appears
desirable to present in the dearest manner the
nrctiou between the power Of the battery, the
dimensions of the w.re ard the resulting plirn0In
euon and the first attempt AZ partial so'H;i ~ OF
this problem is given 10y Prof Muller Of Frclhnrg III
Bavaria According to him we obtain measure Of
the intensity If the glow lay dividing the intensity
Of tie ca,vanic cllr ent by the diameter of the wre
aud the current intensity being given by ohms law.
we find that The effect viii depend upon the number
Of elements in the galvaDc battery, and the electro
motive free Of each clement also upon the tosisi-
aucc Of the wire ana ths battery. For the hat
terry acting on the same length of wire u maNlinnm
glow viii he produced when the wire has certain
determna!lc diameter; the intensity OF the glow
diminises when the wire is ri her thicker or thinner
than this, For instance, with six of Rnhnkorii p
zinc and carbon elements ari ing nn platinum wire
dccIm'trr long. the miNi tin gl'w u pro iucCd
when the d,pnctcr of the w.,e l. /, OF niinc.eI /,
for wire two drClurcrS long tho thickness must
be- iIo If u mln~ter to pr dIcr flir maNltruu
effect. With battery of Two IF Stoirers elements
u platinum wire, two ticCIHirtFis long, cannot T'
raised wht,lOI glow, hut nirv Ice raised 10 u
red heat Whru its dam ter Is mn! rs, or less
y mill meter diameter AMI two meters loi2, 4 BAT
terry of . element i necessary. while 10 such Nil
not make this wire white hot.