The daily morning Alaskan., 1901-05-30

motion by a pedal like that .oi a sewing machine. Around the disc are cngrav- ed curious curves and lines just per ccptiplc to the finger tips when the hand is passed over them. In these lines lie an the meaning oi the new invention. They have been made alter long study of the forms of motion. which each is Co represent Let rs suppose. for example, that it IS intend- ed Co set down for the pleasure and in- struction of the blind the Swayiug of tree in the summer breeze. Wcll a minute series of observations of this movcmcn, is made. a bough rising and tossing. pluncinr and falling, is made to yield to th observer the scenes oi itS lines That is one of the curves and ziczacs it has described m the differ cnt places it has occupied during some five minutes or SO.
 When an this has been patiently ob- served and accurately recorded m dia- gram. the note takcr iormulatcs a long series of lines like those that represent in scientific books the rcSpiration ot a man or the aurae of an clcctriciscd or magnetic bar of metal This diagram i'm an its minute traccry is engraved on the disc Then the blind man Is made Co comprehend by means oi a model the appearance Cl a tree m a state of rest When the disc is set m motion at rate oi speed carefully reg ulatcd by various mechanical devices, ,o as Co give an exact idea oi the time occupied in each movement there i, conveyed through the finger tips to thc brain a perfect reproduction oi all Che successive phases of the boughS turning and twisting Thus the cinema biographical representation enables Che subject Co observe a tree almost as we see it. a living moving, playful thing
 To iS obvious that the principle cN paincd m detail in the case of the tree may be applied Co an indefinite diver ,ity oi natural phenomena Already the inventor has imprisoned on the magic disc the exquisite curves de- ,crihcd by a hid rising from its nest. sweeping low near the ground. dartinr after am insect. sweeping again for mere pleasure oi motion m the sun then m calm. peaceful level flight. with scarcely a luttcr oi itS wings floating ou m search of further pleasure. And he has set down thc rising and march and fan and break of thc waves of the sea on Che beach, Che rippliug of ,hc waters of a tiny stream that plays over pebbles and cdlicS around the roots of a tree. the bending oi a field oi noding corn in che wind the stcady tramp oi a company of soldiers. the rapid and graceful play of a trotting horses hoois and knccs-in fact great many curious forms of motion. very ordinary and by u,c not par,icu lar'y interesting Co uS. but opening new world of delight Co those who have never seen them.
 The joys of the haplcsS blind iu the new machine is one of thc most pleas ing spcctaclcs one can imagine. The lpaihctic expression of thc blind SO characteristic of thc sichtlcss gives place in the twinkling q an eye Co one oi absorbed interest. followed almost ,nstantaueously by one of wrapt de- light
 Yet another curious and bcuifccut application of science Co thc help O, thc afflicted is N DusSard, micro phonogy1ph which enables the deaf even those almost hclplc>, case, who have been deaf from birth-to hear mol only thc voices of human beings and the strains of music but even thc minor sounds of nature. such as the lmrpne O, er,skeisS, u8i i4hy result isl achieved by a delicate vibrating mech 1u,sm which |, connected by tubes with thc deaf persons head just m front of thc ears