| Show scientific miscellany ANY one of the later surprises of science is that we have yet so much to learn concerning the air about us A constituent little understood although its presence near electrical discharges was noticed a century ago to Is ozone which is pure oxygen in a condensed form so instable that it never has been obtained as a pure gas its instability giving it a powerful oxidizing action as it passes to the condition of ordinary oxygen is its must most valuable prop property erty among the suggested br attempted are the bleaching of various substances substance ts the preparation of drying oils and the aging of liquors while medical a attention has been dired directed ted to it ou on account of its efficacy in destroying germs and organic matter and thus cleansing wounds and purifying the air of af buildings ozone Is best prepared by the action upon the air of very fine sp sparks arks multiplied into a kind of electric rain the silent discharge of a siemens induction tuge being convenient in small experiments M andreolas Andr eolis new apparatus consists for manufacturing purposes of a serrated ser ratel aluminum gird with not less than points as a conductor this being clamped to an aluminum sheet with a plate of glass between while the medicine form comprises a vacuum tube tilbe containing a metallic rod and encircled by a shiraj of aluminum armed with numerous points the rod and th the spiral being connected with a coil or step up transformer this apparatus is claimed to be very effective and economical at first sight tuberculosis in birds appears very very different from that in human beings and cattle late re dearchs s by a french brench bacteriologist M no ard show that while human tubercle and bird tubercle have different effects upon guinea pigs and rabbits rabbi tp both the lesions produced produce dand and the cui cultures tures obtained become similar a after ate the inoculations have b been n passed through a series df medical men I 1 a n ale to w h t tog awer noltee to tte ii two 4 to berele the fhe A R belne iset up by W berble a and nil lae ta e abao the urd var 1 ety baras a ALM t erectly infected Inte eted with tub tuberculosis ercolo a f human beings or cattle bhae most I 1 animals are baittle susceptible io 0 bird tubercle yet thees the eating ding of poultry appears to be not wholly without danger the atmosphere ordinarily cont not abt only carbonic acid v gas la bait bu eam wa a thing that produces it it if we are to accept I 1 the investigations of two drw chemists air thoroughly treed freed ironi this gas was found soon to eon contala contal tal a small proportion due it is supposed to the i ir oxidation of some org agile ilc ask bon the atmosphere held uranium rays literally lighted the way to the discovery of polon polonium lum new element 0 of Pitch pitchblende blendo having 21 t notice by radiations tiona much stronger than those of uranium waw it is well known that weiz WW and other liquids often hold in suspension for a long time finely divided ajro of much greater density than the irke the presence of salts salta in soldon we of heating the liquid will suffice au effice to bring about precipitation and M W spring the belgian physicist has J just biotic noticed ea that water containing fine lai Ucla or other non electrolytic matter begins to ta chartty as soon as an electric incurrent is passed through it between electrodes this has suggested ihbe theory that the turbidity is bufi to a 4 modification of the electric state 0 of f the oke finely divided particles the I 1 of a dissolved salt or acid rendora renders take liquid a conductor and the discharge ot of electricity causes the to ca collect elect in flocculent masses while con nee lection tion currents produced by warming tB hav havko jug give rise to electric currents curren the same effect M 31 spring pro posea postS to explain the fall of rain raia in storms on the same theory the expectation of some magnifico tut bt showers will cause shooting meteoric f ml I 1 star observations to be popular during t the he pert next two or three years A eatty been prepared by mr iw logne ie has rate F I 1 denning to show the principal ant points point ft fifty aty in all from showers are seen A to 0 come at ft minor corresponding to the e this Ks six periods perceil gerselda Per seil selda of plays Orion ids leonids and Gemin ids form of storage better batter the A novel invention of prof N H Eg egerson erion h late for its principal peculiarity rity a plate t both and negate se serves arves as positive electrode the battery has vuc to work for 1191 lighting XUng a ce cess tully put about abou t inhabitants of town is supplied with 24 are arc and about Z 6 COO incandescent lamps in this 1 ease se W lead plates each feet are use used another er to t a and are piled one on height of 7 feet the total weight being of ll 11 t h about 16 tons A inch layer on the under surface of e each a c h plate except the bottom one forms the negative side slid and s a hollow in the upper or positive side contains a ir layer of rea lead on which Is a sheet of asbestos this Is 00 oa with gan granular ajar oak charcoal on to is placed A a piece of mu alfi electrolyte sulphuric acia beld lej Is ftc in and is libs absorbed Orbed by the tiac the bf battery works evenly W e ve tor orce ot about X ani and t of ampere r the T great is to have nave an inches and a focal length of feet the usual equatorial mounting and doome danne impracticable for such a gigantic instrument the tube will be rigidly fixed in a horizontal position on masonry supports and will have the light from the heavenly bodies reflected into it by a movable plane mirror 6 feet in diameter the plane mirror is 13 inches thick its weight being nearly four tons As it is thought that a magnifying power of and occasionally of may be usefully employed while the highest power of existing telescopes does not exceed interesting results are expected the telescope is being constructed by M gauntlet Gaunt ler the french 0 optician the estimated cost being an am excellent mucilage said to resemble that from gum arable arabic is prepared by dr george Elch eichelbaum elbaum form the refuse of the beet sugar indest industry ry after the root has been exhausted of its sucrose au crose the mass is treated with a hot aqueous solution of sulphurous acid the insoluble meta acid being thus converted into a soluble methyl a new sweetening agent is stated to be times as sweet as sugar |
