New-York tribune., 1875-09-25
APPLIED SCIENCE.

Spe degree causes and implies delay retardation
Sf Sa days Of the various steps IN the development
- plants especially of the blosSoming IN Spring
VEGETABLE HAIR-BALsAM.-An article under this
aane by Marquart OF Lepsic. consists, according to
en.lyres of Prof Wttsten of l.56 per cent af ace
NnHs Of lead per cent of sulphur 2O.5 per cent OF
Glycerine and ?6 per cent OF spirits OF lavender
Renee not only is the price Of II extorti0natc but
SAe continued use OF 1t ~ III the highest degree
AsnEerOus.
RARE ANIMAL PARAsITT-Great interest was
sEcated 10y the exhibition, at recent meeting OF the
Nnpean Society Of London, of a remarkable para
s1te the large human fuke," Distornd crass"m
The parasite has only once before been observed,
when IL was discovered 80 wears since ny ir0f
euAk The creature was described by lT L. >. Coo-
Su)d who introduced 10 the meeting Chinese ms
A"nary. who with his wife, had become victims OF
che parasite.
PREPARATION or CARMINIC AClp-Carmlnic acld
nay be prepared, according to Warren de la Rue' by
boiling part of pulverized cOehinHa for severai
Dputes in 40 parts of water and precipitating the
clear filtered solution with acetate Of lead, slightly
ssidifed with acetc acid The precipitafe OF car
inmate Of lead separated by hfratlon ana Wasneu
nav b, decomposed by sulphureited hydrogen ana
0he red nitrate, from the sulphide ot ead iOrmeu'
may be evaporaed to dryness ana me Sm
With ether, again hltered ana eN"Peia'e" W ou'
nSss.
Tuv SyxsIr1vRvrss OF THE FYE TO DIFFERENT
90, oRs-A series of five Investigations has been
made by Knnke on the dependence OF the sensitive
nees of the eve To coloTs, upon the duratlon OF
naht The results may he summarized as follows;
TAe yarions colors Of the spectrum require different
t1nse in order to bring about an impression This
tDe is shortest Of all for rrd and greatest for pine
Rur the same colors the maximum impression pecu-
has the color is reached III shorter tunes in
1aon ~ the intensity of the color increases By these
l.
invest ftations of Hemhoz and OF MAYER the lat'ef
Having shown that. in the case OF sound me ear 10
more sensitive 10 sounds OF high than of low lh'eh
atty.
eYsTFN,TIC CHANGES IN LATiTVDF-pnrlnp the
>sf 20 wears astronomers have been mindful OF the
MT that certain theoretical researches have demon
sGssted the possibility of the existence OF slight
changes III the atudes of points in The earths sur
n.ce hich changes eond be referred only to an ac
tnsl change in the axis Of rotation The only as
fyunomcal observations tha, have had sufficient
Aexree of accuracy to afford information upon this
Do5nt have been made by or under the direction oil
STRIVE. The question was first investigated by 1.
AF Peters. but lately Nyren has published two IN
tsuestng papers upon the subject IN the hrst OF
which De has discussed the observations made for
- express purpose of determining the value OF the
eoostant of mutation. The second paper, recently
Subhsbcd in the memoirs of the Imperial Academy
~.
f1cps made simply for the determination o latitude,
which extend over the years 1Sa2 TO 1873 Dr'
NyTen finds throughout tins period decided dmliu-
tsen of the latitude of the observatory OF fonlk0Va
and is able 10 show that similar changes have aheh
place at Greenwich Washngton, Pa'is, Milan
Rome Naples aud konigrbeIg. While some OF the
observations used 10y him are Tar less accurate tham
sfhers il still remains remarkable that they All
Oujte in showing a steady diInnuton of latItudes
and therefore seem Ia point 10 something as me ~
tsmate other than any local change III the us
rihu,jou of masses in the interior of the earth II
t.l. hot hll
n least at Poulkova the result OF the efect on
Che p.ninh line of a relative change OF level between
Sle Baltic Sea and the neighborlng coasts. the Bo
uisn ccast rising and the Swedish and German
seasts sinking. The question As /" the periodical ten
month, change OF latitude is not ahectedny these re-
snlts
AMOUNT OF MOISTURE THE WALLS or NEw
Dull NEUTRALITY-SUSPICIOUS. in regard to the htness "r
occupancy of dwellings, especially new oHts. demand
so~rtau degree of dryness and the questions as TO
What the amount of moisture IN wall AT any par
Sculsr time may be- and 10 what state of dyness
- reoured bv considerations of health have been
much discussed Ia particular place, certain
vsriod for drying new buildings. dependent upon
slirnatt material Of construction. and style "f aic
lecture NAV become to be fixed by experience, ar
aec@ssary but the direct testing Of the walls ss to
H. amount of moisture III them has been untrus-
worthy. In view of these facts. number OF expert
~snts were made nv Dr. Glassgen. nudtr The direc
ton of Prof Pettrnbofrr. for The accurate deter
nipstion Of the amount of moisture present in walls
q any time. and method was hnally fonnd mar
RHye satisfactory results. Portions of the pasterng
taken from different paris ot partition walls were
tested. The free water and water OF hYC!ation "i
the lime detei mined srparaieN, me foTuer ny
drying sifed specimens IL "A lenlgc driving tune IN
current of air reed from cdrbonic acll, ana the
latter by pi>siOg cureut 0f cdrhon,c acid over tie
sk<eime. thi,s dried. while heating II. The general
conclusions from the tests made Of great number
of buildings. under VARYING conditions, were tha
there is n constant oss Of moisture proportional 10
Abe time and that there is great difference between
the times Of diving IN intcv and summer, ana OF
sxpcSed aud uneX ptsed buildings. Further tests.
however involv ing numerous details are considered
necessary, III order 10 3'sN ~ ,ht question as 10
when new binding may he declared dry; bat II Is
boped that the publ, aton Of the above method
end the detailed results may lead To fuller InvestiSa
bon.
TpE ORIGIN op STORM CFVTRRs.-1n b careful
eourse of inGnctye reasoning, Dr. Ham has en-
Aeavm-d t. elncdate poiHts in reference 10 the
tnfnence of rsinfall the hight Of the barometer
snd on the origin Of areas of low barometer. He
slater that contrary TO the theories OF Espy and Ley
Aoceor,iing to which TainfaliS should cause low la
rpmeters il is actually observed that frequently the
bsroDe,rr rises during rainfall. and always stands
hisher after q rain than before. Sotwitbs andine
tAsa il generally raus during low baroneters the
fct Remains that the lowest pressure precedes the
min the of hat i: should do If The low pres
sure simple consequence OF the rain In
scferepce this point. he concludes that the con
1eusation of atmospheric vap0r has notable nhu-
SDce upon the changes Of pressure and that, there
f~ the existence of the low hsroneters that char
seterize the centers Of storms cannot be explained
by the formation ot rain. He then goes into the
theory Of the formation of ci0nd and rain, aud
shsvs ar EspV and Wett~toin had done previously,
thai Hnttons theory of the mixi,ne of WARM snd
cold air must tt abandoned and that, iu reality, the