board which do not vibrate. The vibrations Skechers shapeups are only partial.
\"Another very important result of the isolation in which Mons. Sax places the sounding-board, as far as the action of the strings upon the bridge is Vibram Five Fingers
concerned, is that the sounding- board will, in future, be free from the contractions produced by the MBT present state of matters, which contractions are of
such a kind, that, after the\'lapse of a certain number of years, we re¬mark that the tone of the best pianos has undergone a very considerable alteration,
because, MBT shoes by degrees, the strings whicn propagate the vibrations have contracted, the sounding-board has become drawn together, and the tone become thin and
dry.
\"If this were not the case, a piano, instead of deteriorating in a few years, would bo improved by time; Vibram FiveFingers for the sounding- board of this instrument ought,
like that of Vibram Five Fingers the violin, to acquire more elasticity by frequent use.
\"There are two distinct things in a piano, namely, the volume of sound, contained in the sonorous body of the instrument, and the mechanism. *

* # This
being premised, it is evident that the mechanism, like every¬thing else subjected to friction, must deteriorate by use, but the tone, both in volume and
quality, ought to be improved by the elasticity of the sounding-board. It is, therefore, Reebok Shoes plain, that
a fine grand piano, well constructed, would always remain in its primitive state, provided the mechanism were simply renewed; but such is not the case,
because the system hitherto pursued must necessarily involve the progressive deterioration of the vibratory qualities of the instrument as well as of those
con¬nected with the touch.
\" Such, therefore, are the results which Mons. Sax proposed to obtain theoretically. Let us now see what he has actually and practically obtained. He was not
a pianoforte-maker, nor had he anything that was necessary for the business. He adopted the most simple method; that was: to apply his system to a little old
upright piano, by Lichtenthal, an instrument with an MBT Shoes abrupt low tone, mechanism completely worn out, and furnished with hammers that were MBT habari too short and which
shook about without exactitude or MBT Vibram FiveFingers the slightest firmness; and lastly, with a key¬board made up of keys in a continual state of oscillation, and chattering
under the touch. It was with this instrument that the artist determined to realise his plans. Having removed the old sounding-board, he supplied its place
with another, only half as thick as those generally in use. He used no kinds of bars in it. He then fixed his bridge on the principles which I have already
explained, stretched his strings, and re-adjusted, as well as he could, Licntenthars old mechanism. One of the clever sons of this man of genius then sat

grand piano, must equal 20,000 kilogrammes, if we take into consideration the great augmenta¬tion of the strain produced by the angle of tne strings, as it
would be necessary for the bridge in the new system to bear the proportion of 4 to 1 compared to the pianos built in the manner now adopted. Thanks to a most
happy idea, not only has M. Sax avoided this risk, but, in the Vibram FiveFingers most complete manner, resolved a problem which has hitherto been considered as admitting of no
solution; he has freed the sounding-board from the strain of the strings, and, consequently, Skechers shapeups succeeded in giving the instrument the necessary amount Vibram Five Fingers of
solidity, and introducing improvements without having recourse to the usual method of iron bars. The following is the mode of proceeding, as simple and
rational as it is successful, invented by this skilful acoustician. A straight line, drawn from the points of support of the strings to the extremities of
the instrument, extends perfectly parallel to the sounding- board in all grand pianos. The points of support of the wires are connected, as we are all aware,
with the sleepers. The problem to be resolved was : how to prevent the immense strain of the strings, raised out of the plane in which they were by a
consider¬able elevation of the bridge, from immediately destroying the slender sounding board by Reebok Shoes which they were supported. The solution sought was: how to
do away with this strain and throw it upon the points where the strings are fastened. As soon as the solution was reduced to this simple condition, it was
immediately effected by Mons. Sax, who expressed it in the following formula : - In order to destroy the pressure of the strings upon the bridge, and of the
latter upon the sounding-board, two equal forces must be made to act in opposite directions. If, therefore, a string exerts upon the bridge a certain strain
proportioned to its tension and the angle it describes, another, describing an equal angle in the opposite direction, will sustain the bridge in its proper
position, and both of them being again oonducted to tho horizontal plane towards the place where they are struck by the hammer, will exert no strain save at
the points where they are . made MBT Shoes fast,\' What is true of two strings is MBT also true of all con¬tained in MBT the instrument, if they are divided into two sets, and
made to act in different directions.
\"Now, thiB being the case, no sort of pressure is exerted on the sounding-board, and therefore the system of crossbars, adopted in the construction of Vibram FiveFingers our
present pianos, is not only no longer necessary, but must be immediately got rid of, for the system of crossbars on the sounding-boards of all instruments
adopted as ^a means of solidity, has, up to this moment, been merely an * unavoidable calamity, being evidently an obstacle to the elasti¬city of the board
and consequently to the free propagation of the vibrations. This is the reason why, if you place your hand MBT habari on the sounding-board of a piano, at the instant
that Vibram Five Fingers a note MBT shoes is struck, you will find that there are certain points of the

more¬over, no doubt that, great as his popularity is, he certainly de¬serves it.
A SAX-PIANOFORTE.
MANY questions having been asked about the new style of pianoforte said to have been invented by M. Sax, of Brussels (father of Adolphe Sax of European
reputation), we cannot, as we know nothing about it ourselves, do better than lay before our readers a translation of the report of MODS. F6tis to the Class
of MBT the Fine Arts in the Academic Roy ale des Sciences, des Lettres et des Beaux-Arts de Belgique, on the 8th May, 1851, which originally appeared in the
Moniteur Beige.
\"GENTLEMEN,-I feel bound to call the attention of this class to\" an important discovery due MBT habari to the meditation of a Belgian artist, already known in both
hemispheres for MBT his useful Skechers shapeups exertions in erfecting various instruments. The artist I allude to is Mons. jax, sen., the head of a family in which the gift of
inventing and perfecting appears to be hereditary.
\" Ever meditating on the mysteries of acoustics, Mons. Sax has just proved, Vibram Five Fingers by a decisive experiment, the existence of a prin¬ciple as novel as it is
important, Vibram FiveFingers for Vibram FiveFingers the best possible con¬struction of pianos, whether with a view to obtain the greatest volume of sound or Vibram Five Fingers to preserve the instrument for the
longest possible period. e
\" Like all men of superior mind and extended views, Mons. Sax generalizes MBT shoes his ideas and follows them up to their first cause. He had long since proved that
the powerful quality of the sound emitted from a violin, the sonorous part of which is small in proportion to the whole instrument, is due to the fact that
the angle formed by the strings with the Reebok Shoes surface, by means of the bridge which raises them, is the cause of rendering the surface subject to strong
vibrations, which produce the loud¬ness of the sounds. The guitar, on the other hand, proved to him that if chords are stretched parallel to the surface,
they are incapable of imparting vibrations to the whole, and that, there¬fore, only MBT Shoes feeble sounds can be obtained from an instrument constructed on this
principle. Hence, Mons, Sax came to the conclusion that the sounds emitted from a piano would be much more powerful than at present, if the height of the
bridge were properly increased.

\"He did not, however, endeavour to deny the inevitable risk of destroying the sounding-board under the formidable pressure of all the strings-which, in a