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Show ! ' - I POPULAR 5CII3NCI; H I The Bottle and the Dime. as is well known, many butties, par tt.-ularly 1 1. in t and preprlclary ene.ll r'.t." bnttlis. when cmp!l-. or their original cnuicnt me refill. d with spurious liipiiiis and to even nine this fraud a litme number of ib-vlcte add greatly to the of the b.itila. with no means of repii) incut eviepi (a the " J jjJCj Induces Destruction by Consumer. Increased salea uf tho genuine commodity. com-modity. Tho object of the Invention here II lustraled la to provide a teotlle which the consumors will be Iv-luccd to destroy de-stroy when empty, the snisll extra charge to the consuuitiv being returned re-turned iiKin the breakage of the recep tacle. The Invention uaslsts In arranging ar-ranging a coin In the recess of the bottle, tho value of the ln being sufficient suf-ficient to tempt the custi tuer to fulfill the purpose of tho mnniv'acturer. Tho ruin is placed In a poi r.it during the process of nuiiutfacture, lie edges uvcrlupplug the outer face ot the' coin, so thut to remove It a large portion of the bottle must be taken away. The patent on this bottle has been granted to Iteglnald V. I'okrop of New Haven, Conn. Safety Dress for Electrlcfl Workers. An electrician's safety dress has bean Invented hy Prof. Artemleff, and It was lately tested In the high tension laboratory nf Hlemens A Malske. The dress le composed wholly of fine btit thickly woven wlro gsur.e, completely Inclosjng the wearer. Including hands, feet and head. It weighs I.S pounds, but its cooling surface Is so great that a ci-.r.ent of ;uo amperna can pass through the dioss from band to band for some seconds without perceptible heating effect. Kiundlim on the ground llllltisulllti-tl, I'rof. Artemleff drew sparks from the secondary terminals of a traie-fnrnier which wss giving a tension id 7,1.uiii volts, with a p-rlod of bit cycles per second. Tim Inventor coin-hull . I bis experiments by short-circuiting short-circuiting a genenitnr of l.tt kilowatt capacity by clutching holil of tho terminals, ter-minals, thu potential difference be twecn the two being l.uut) volts, and the current panned 2'e amperes. 1 hroiiKuiiul the sH.rlments I'rof. Artemleff Ar-temleff declined thut he did not feel the slightest sensation uf a current passing through the bodj. Unlcycle Bulk. A lllile, cramped up room at the corner of Michigan and Hineca streets contains a few pounds o"! steel, wood and rubber which have been so cunningly cun-ningly devised and combined thut they hid fulr to revolutionise hnrso racing, and. perhaps lower tho trotting record to a point under the two-mln-uto n ark. The new sulky, which has but one wheel, will weigh from twetvo to sixteen iHiuiiils less than the lightest light-est bicycle sulky. Hmid friction will bo reduced to one half, and on curves centrifugal force will help to decrease ruiher tnun to Increase fiictlon. The uulcyt-l.! riiciug machine Is the invention ol J. H. H- nrborough, the Inventor In-ventor ot the Jupiter Slel.'l process of the United Ktutes Hleel Co. Detroit Kreo Tress. "Dark Lloht." Rome five years ngo M. l.o lion announced an-nounced that when light fell on one aldo of rerlnln bodies a thin metal place, for Instance the other, utilllu-mlnaled utilllu-mlnaled sldo of the plate gave out nun lllumliioiis radiations, which were luter shown to be Identical with cathode cath-ode raya and which aro now believed to bo made up of elements of atoms carrying au clocirlc charge. The ru-illations, ru-illations, snys I'opuhir bclcnca News, are analogous to the X-rays and to tho rays of radium, and traverse thin plato of meia! freely and discharge electrified bodies III their puttt. Blm-liar Blm-liar cllliivla are produced in a greut number of chemliui relictions, and the phenomenon Is, In fuet, oue of tho most common in nature. Fire Protecting Shutters. It Is not often thai a Jupanese Inventor In-ventor enters an application for a patent pat-ent In the United Hiatus patent office, & Lj . J Produot of a Japanese Inventor. and tho automatic flre proteetlng shutter shut-ter shown in the picture lias considerable consid-erable interest for that reason, as well as for lis merit as an Invention. Thu double shutter la Intended to bo mounted on spring hinges, which ndupl it to selr-cloHtiro the Instant the rostra' nlng device is withdrawn tnder the I rat of lire, and at the suine time the sb liters can bu easily opened ami .loHi-il by hand. A ntch Is :. lilted on the wnil Link or each shut- ler to hold the luit.-r op. n when thrown hack, and to close the shutters I by hand II l only m ccs-.ary to pull '( . thu cord wiiliti lianga beneath the lert ) shutter, when the spring hinge Will ' perlorm lln part. At the same time f," the rounei ting rod over the window releases the opposite cnti Ii and allows the seiuuil blind to close over the first. To acci.niplMi this result auto- ' mntli ally under the bent of the flames, ' a fusible link or ring Is used In con- T nectlon with the fastening of tho first ', or lert slimier, and tho melting of this ' ring permits the spring hlngea to j ' close the blinds In turn before the ' heat haa reached the point nf danger t , to the contents of the building. f - American Railway Bridges. The address of the chairman of the ' Section of Mechanical Knglneerlng at t the July meeting of the American As- r" soclutlon for the Advancement ef b Bclencs gives statistics of American y bridge construction. From it the fok lowing particulars a-e taken. A os- t en years ago few plate girder hrtdgee were built whose span exceeded loo I feet. The span of the largo pi ale j girders of the viaduct on the Hirer- I aide Drive In New York city la 1J i feet. ! The channel span of the cantllover bridge over the Mississippi at Memphis Mem-phis measures "'..iffc feet between supports sup-ports and la the longest of Its class In America. The Wnhnsh system la now building such a bridge at Ittte-burg, Ittte-burg, whose span Is to be 813 tort. The channel span of the cantilever bridge over the tit. Lawrence at Quebec Que-bec 1 to have tho unprecedented length of 1 .Hint feet. This la 100 feet ! longer than the span of tho Firth of Forth cantilever bridge and 200 feet longer than the span of the llrooklya suspei shin bridge. The towers are In be SCO feet above high tide. It will accommodate a doubt track railway, two electric railroad tracks and highways. high-ways. ' A Woman's Invention. The ordinary manner of applylag powder to the skin la by the aid of a fluffy brush or "puff." whlrh Is Inserted Insert-ed In a receptacle containing tho powder, pow-der, to tnke up a quantity nf the let- , ter and transfer It to the fare. This, of necessity, occasions more or less sprinkling of the powder upon the dresser, while tho majority of powder receptacles are not at all convenient to carry around when the owner Is traveling, A substitute for the old powder puff bus recently been patent-ed patent-ed by Marie I,, (iumaor of New York city. This new device consists of a perfumlcd face plsle of any sort fabric stretched on a frame and connected with the metallic disk ul tho rear by 1 a band ot chamois leather. Inside which Is a rolled spring serving nor- ' mnlly to bold the disks apart. The handle screws Into the center of the bnso. and Is removed to Insert the Compressed Air Drives out the Pew- ! der. powder In tho puff. In operation the perroruted stirruco Is pressed against tho skin, when the compression ot the air Inside and consequent discharge through the perforations drive the powder out also, causing It to adhere to the surface against which the puff ' la placed. Eye Strain and Nervousneas. Blniple eye atraln la at the root of many of tho Ilia of nervous patients pa-tients in tho opinion of Dr. Ot-orgo 8. Hull. Tho brightness of California's sunshimi senda inuny visitors to the oculists, who, In relieving the eyes, relteve also the stomach troelde, lieuduche. Insomnia, depression, spinal spin-al exhaustion, and even tuherririoeis, for which long health trips are taken. With Foreign Scientists. It was recently denioiislruted by M. (icr.rgo Claude In a lecture In Iwrts that liquid air ran bo uied to extract hydrogen from ordinary Illuminating gas. A French scientist has examined t 3.C1I7 Culex mosquitoes from Algiera and vicinity and finds no evldenc. thut this gMiua propagates the malarial mala-rial microbe. ' Jean Jduuiuus recently ligatured the , end of the vermiform appendix of monkeys. Dissection after 22 (lays : showed that nature was di-fenillug the menaced organ hy circumscribing adherencea and encystment. llorr Uachuus, ot thu Agricultural Institute of KoenlgHbiirg University, after experiments In feeding cows on different foods, concludes that the i tluvor of milk depends moro ou the peculiarities of the animal than on the vegetuhlea eaten. i M. Treves, writing in the Kevuo de I I'sycblutre. finds tiiut of the trans- j verse markings on finger nulls normal persons bavo only 10 per cent, where- f as degenerates of nil sorts have from i four to seven tlm.-s that ainonriL Critics of these stittibtlcs point out ' that the markings vary with the physl- cal condition of the subject. f I j I ( |