New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1859-10-29

possih,s and W vii sot Try 10 eeaviacs tAsn Of shs
error, - they ars naturally hopeless sni helpless
while Others, with little thought, may zee ne Ger
taisty Of such results - plainly - have th,se who
actually produced them. T,e atmospheric ensias--ss
has been daily seen for some weeks past ct the Fair OF
the American Insti,uts-requires nothiag bat s coo
slant application Of heat to its cylinder to produce and
coutinne motion. Now, suppose the rays OF the suo
were concentrated by lens this cylinder, would IT
not be perpetual motion mac ine! This hss actually
been done in q small machine ss q curiosity From
this it is ssen that the same law AMI principle would
make perpetual motor Of the steam, or any other
elastic fluid engine.
Again: the expansive force produced bys given
quantity of hea; carnot be measured II is ndehnite
80 thu. the effective power produced BY bushel Of
coal only limited by ignorance Of the bss. way
of applying il and as we are constantly gaining
knowledge in this direction our rsative measure Of
power is constantly increasing. belief in the per.
lection of our present knowledge is false was
Wsttss thst his last invention perfected the steam
engine. The unlimited power in given measure Of
heat is also Illustrated by the atmospheric engine.
Suppose measure Of air to be compressed to half
its original bulk by one measure of power, after
which one measure Ct heat be added, we shall then
have two as our measure of power; and as but one
measure expended the pump, We have one
measure of effect. Now if with the measure OF
air and the same measure Of heat We expeDdtwo meas.
ures of power in COMPRISING the cold air, then we
have four measures of power which after deducting
the two applied TO the pump leaves US two
measures Of effect Thus with the same expenditure,
have twice the power, and s. 90, to infnity. In
practice are limited by two things, leakage, and
latent heat becoming sensible under extreme pres
sures but as We constantly gaining mastery over
these, no one doubts continuing to do 80. With
small measure Of power, intense heat may be gene
rated by electricity and science has taught rs OF
lis infinite power whatever may be eventually learned
of eectromagnetism, clear that no theoretical dif-
cuty exists to prevent motion from this source sand
scientific gentleman in Washington, some years ago,
actually perfected device which, when all the known
laws were favorable, did receive and maintain its mo-
ton without the oxidation or other apparent con-
sumption of material.
Men who believe they understand the law and the
principle in all the domains Of practical mechsnics
can of course learn no They unable to sd-
vance in science and arts and may well say perpetual
motion is impossible. While those who do not be-
evs in .cience but prefer to trust to an uneducated
urdiscpined mind, must continue to dsappont them
selves with springs levers, and the single force OF
gravity But such of us as can comprehend that the
laws Of nature are Infinite and ourselves finite, may,
by learning more of the laws of science make pract-
cable what those laws clearly show to be possible
Az IsGEsrous IDEA.--An interesting operation was
successfully completed Lately in Port Duudus, Scot
snd for the restoration of chimney which had set.
tied out Of the perpendicular. This was accomplished
by saving several Of the mortsr-bsds between the
courses on the side from which the chimney leaned,
thereby allowing it to come back by its own weight,
without the application Of any external force. Only
one draft was cut at time, to guard against any
shock which might have endangered the stability Of
the building, and by keeping the saws wet, bed Of
mortar was prepared for the superintendent weight to
settle down upon. Twelve cuts were made in this
manner, on different parts Of the structure, which
generally Get before the saws had passed through hall
of the circumference particularly in those made near
est the ground, where the weight greatest. The
principal dimensions of the chimney are: Total hight
46S feet from surface to top of COPE Asa outside di
smeter at foundation, so feet; at surface, 81 feet;
cope, IA feet.
| A MusIc RreIsrER.-This ingenious machine, re
Gently inven,ed by gentleman Of Akron, Ohio, wh'
sends us the fouowiDg description, Will interest ar
rangers and cOmpers of music orginators of m sody
and performers generally who are not content with
| the productions of others:
at is placed the top Of the piano. other keyed
instrument, directly back Of the keyboard; its own
weight connects it to the key by small rods running in
front Of the name board The impressions or notes sre
made on black canvass, passing from one roller 10
another, moved by ciockwork and white coating is
applied while winding Whenever the key is depressed
the lever in the machine follows, by means OF light
spring sufficient TO remove the coating, showing
black marx. At one end of the register is a time
beaten or metrnome that gives the regular up down,
nsh and left beat set to any variety OF time desired.
Al the down motion is attached marker, giving its
character on the canvass and showing the commence.
me Mt of each measure. The music is copied from the
canvass in front by the aid Of an index, or horizontal
lines on glass corresponding with the character OF the
thu bester or length OF bars, and small lines ndi.
eating the shorest note or rest. The perpendicular
lines designate the letter Of each key. The canvass
can psss through several times before the musical
sonnds are copied: and when desired al the marks