New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1874-02-27
NEW PUBLICATIONS.

OF OF the most prolound
:, ,nod.rn physical research. 1t sets forth, 20 10
.,..i the metaphysics OF physics, illustrating the
-, .uhtle conceptions by familiar examples. aud cloth'
,ne the results OF acute and delicate analysis IN IAN
mage adapted to universal comprehension The me'nou
a, the author. indeed, is elementary, mat supo
bc,a reader might be tempted TO pronounce u uVla'
ne takes nothing for granted, assumes no previous
,novledge of the subject which he discusses always
presrvos the attitude of teacher who treats ms pup
a, s,chd the result is mass OF CHARMED ana trans
orent ideas which could scarcely be obtained from tue
earsome study OF reconcile treatises Professor
stexart regards the universe as q vast physcai ma
.bine Our knowledge of it includes two branches,
namely what know Of its structure, and what we
know of its working. OF the ultimate structure OF mat
ter whether organic or Inorganic we know nothlns
me limits OF our senses prevent us from ever
becoming directly acquainted with the minute |
noses which furnish the raw materials OF the universe
Hu We are not ignorance OF the laws OF their work
Ing considered as whole In q glass globe OF gold
fsh for example, know that while the fish are In
motion the globe is at rest Between the units which
compose s CONTENTS action and reaction are equal and
orpo.te and hence there is motion In the parts, but
moi in the system In rifle the contrary the rush
The ball IS IN one direction but at the same time there
r. kick or reco Of the piece against the shoulder OF
The sportsman or in other words, while the ball Is pro
,.cted forward the rife stock - projected backward
the stock weighs 100 ounces and the nail one ounee an"
The ball IL projected forward with the velocity VI w.
loot rer ,ecopd the stock will be projected backward
with the velocity OF 10 feet per second, that 10 says
The mass Of the stock multiplied by Its velocity Oh recon-
1, equal 70 the mass OF the ball muluphed ny iS We
oo,ty OF projection The one producIls the measure VI
The action IN one direction, and the other product 10 ne
measure OF the reaction in the opposite drecuoh 90
that IA the case of rife well as That OF the soiu
tsh action and reaction are equal and opposite bu'
there is vital difference between the action OF the rle
bal and that OF the rife stock The former mas 'ne
mower OF overcoming resistance. 1t can pierce through
efar or y.
This poyer Of penetration is the characteristic OF
Il substance moving with great velocity We
define this power by the term energy. nne
ball therefore, movDGlwith great velocity has energy
OF AZ 1t may be called, the power OF doing WORK luis
energy is in proportion 10 its weight. bail oil TWO
ounces moving the velocity Of 1000 feet per second
will be the same as two balls Of one ounce moving win
Tho same velocity, But the energy OF two similarly
moving ounce balls will be double that OF one so tnat
the energy is In proportion 10 the tWegh the NeiocS
remaining the same The energy however on the other
hand lie not simply in proportion TO the VeoeIy II lhS
were the case energy Of the rifle stock ana OF the
rne would be the for the stock would gain as
much by its superior it would lose by It's 'feror
velocity Hence the energy OF moving BODY increases
with the velocity more quickly than in simple proper
tou so that II the velocity be doubled the energy IS
more than doubled The OF this increase is well
known energy varies the square OF the velocity,
that is If ball have double velocity Its energy is
increased nearly fouTfold. 1t would pierce through
SINGLE velocity We have now clear idea OF energy But
what becomes tho energy when motion destroyed
Where the energy Of the blow after the hammer OF the
blacksmith has struck the anvil The percussion
at first sight to have destroyed the energy But
does not something lse make It's appearancejat that
very instaDti For after ALL may De that energy is Ike
those Eastern maglcans who were said TO have the
power OF changing iuto variety of forms, but never
entirely disappeared. The suggestion is true. When
visible energy is apparently destroyed by percus
zion OF friction. something else makes its appearance.
and that something IT, heat piece Of lead placed upon
Ill anvil becomes greatly heated by blows Of
n blacksmiths hammer. a cannon ball may even be
made hot by striking against iron target For
long could explain this appearance OF iheat
after friction percussion. IL was believed that heat
was kind o; matter and that calOrc iuhe imaginary
substance Of hea squeezed out Of material bodies
by percussion. Sir Humphry Dayy showed that TINS
theory would not hold. His experiments, showeVer
though placed nrst IN order ome by Professor stewart
had been anticipated by those OF Count RumfOrd III
Munich who led to ascrbe the heat brought out in
the boring Of cannon the effect Of motion. The law
Of the Of motion into heat and OF heat Into
motion, has been made the subject of curious
and exact experiments by Mayer in Germany,
and Joue in England, who agree in the result
that a weight OF ia pounds falling from the
hight OF one foot develops sufficient heat TO
rase the temperature OF pound Of water one degree
OF Fahrenheit Inversely, pound of water in losing
degree OF heat deyeopes sufficient force to raise 72
hight OF This is what is called the mechanical
equivalent heat expressed in footpounds. The pro
by which tins conclusion has been attained 10 fully
described by the author but his figures based on
the French metric system, and the centrgade Their
oeer his explanation hardly available for popular
use His statement OF the general principle OF the
servation OF forces TO the purpose. This implies
that all the various Of the universe
is q constant quantity. The ultimate conclusion with
regard 10 the Of the cheerful. No,
that II inteTferes with the enjoyment OF musical
mstinees or charity balls aesthetic kettle drums, So
long the and the earth hang together but the
Images Of certain darkness and desOation which pre-
sents adapted enltven the fancy produce
excess OF hilary Tue sun Is the great source Of
material Ii forms vast reservoir OF heat az
temperature But whatever the origin of the solar
heat. supply is limited, and must at length DO
bausted The ancient Is compared by the author
70 a young speudth1i who is making way with his
capital He doomed TO share the fate OF all who
IN a similar manner. AT future period he Will be
poorer In energy than at present. Al a sI further
period in the futdre he Will altogether 10 shine
Its visible energy Will be converted into dhused heat
The universe VIII become equally heated mass
utterly worthless for the pTOtr ction Of work. from
which everything like life. motion. or beauty. will
forms The substance of the volume, II contains brief
trestises the vital and mental application OF The
doctrine 10y Professor l. Coute and Professor BAN.
IIFF STORY OF RtV DAVIS WASCATT CLARK L. D. b,
D.,isI Ccrrr b b. i2uo rP' 1896 Nesoa 4 Phillips. ''
The subject of this memoir was an eminent
minister OF the Methodist church. who widely known
the members OF that persuasion for the wisdom
of his counsels the force OF his elJGueuce and the
balance Of his character Curry gathered
tie materials OF bis work from his personal ac-
qusiDtance with Bishop Clark, and from variety Of
g.N