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Show ' J W()!u)l) OF SCIENCE. LATE INVFMTIONS AD DISOOVEBIES OF IMPORTANCE. "' "!. l tlsvlaeJ for Mensfll r w..t,l-n Trsla rlohse's Sun.. r,,sr MM.erlsg Cleth er Veper I'nsna, I'aanlog Uevfe. Prntscllna A,r r.trre-s I'srs. Below Is shown a novel arrangement arrange-ment for IntorccplinK the operation of train robbers who make a practice of sneaking aboard tssms at obscure station sta-tion In the nlKht tin! keeping In hiding hid-ing until the trail reaches the local-Ity local-Ity of confederates' ponied along the mad, and then suddenly taking position posi-tion on the pint form sf the blind hag-gags hag-gags or express car si hlnd the tender, ten-der, to cover the eju-'ne r and fireman with guns, aud (Jiifi lorce them to atop the train for the nidations of th confederates. Tho (Infitlon consists con-sists nf a trap mechanists, adnptod to bo sprung by tho rubier on taking tak-ing position on the pillions, to grip him against the tender or handrail ot the car, and the Inventor ilso suggests sug-gests a further paralysing ttiatment In the form of a powerful elsrtrlo current cur-rent to hinder th robber li bis efforts ef-forts to escape. The J,V;d plates shown In the flisir of tliositfn provide pro-vide tha releasing device for twinging twing-ing the trap as soon as ihe Intruder places his weight on them. Abort the ssme height with the top of ths landrail, land-rail, and resting normally agulad the end of tho car, la a metaj plats fir a board attached to the outer end of a hoitzontal piston rod, the latter est er-Ing er-Ing a ryllnder and holding a culled spring under comprnsilon. At soon as the tripping plates are depressed the piston Is released hlld 11(71 tho hoard forward to bind the rfliiwr. It la pretty roiuh treat merit, but probably prob-ably no more than he deserves and the result Is a raptured burglar and prevention pre-vention of the contemplated iwiibery. J. 8. Johnson ot New York city Is the Inventor. ' MeMsrss rioth er Taper. Aside from tho waste of time Incurred In-curred In measuring cloth or paper with a yardstick or other email measure meas-ure there la danger of loslug co mt, Incurring a loss of material If tie good are being measured for sale or Inconvenience If the work Is being laid out fu use. John It. Nleman of i'e-torshmg. i'e-torshmg. Neb., baa recently designed a simple muchln for porfosulng this work automatically without the loss of I tlise or material. , As shown In the Illustration, there Ik an Indicating and recording dlsl carried by a circular caslig with a revolving re-volving sh) 1 mounted In a sleeve over the dial. This shaft has a worm gear and the revolving disk his corresponding correspond-ing teeth around Its edge. The machine ma-chine I shown mounted at the end of a com or or table, th two screw plate allowing It to swing freely downward until tho w'.eel on the end 01 tho abaft atrlkea against the edge of th support. The wheel Is provided with a rubber tire and Its frlcllonal contact with tho material to be measured meas-ured Is further strengthened by tho weight of the machine. To put the measurer In operation tho goods to be mensured are Inserted kenuatb tho wheel and drawn arm tho counter as rapidly as may bo d sired, the revolution of tho wheel turning tho dial and recording 'v length of the piece. The dlaMi hiid on tha toothed disk by a cei-rv.vV.i' which can be loosened slightly ( awing tho soro around to tho rovnlv-lug rovnlv-lug finger or pointer on the disk, ta permitting the counter to start at Die I X v,,., Kubbsr-Tlrea Waeel Actuates tus , Kseot dev. cipher for each measurement. Ths device de-vice may bo attached to a heavy weight lying on tho oouuter If preferred. pre-ferred. The Meters of Wai-vs Stleaalailow The complete theory of nerve stUnu-1 stUnu-1 .011 recently furnUhud by Professor Malhews of the University of Chicago Is concisely stated as follows: Tie !r-rltublllty !r-rltublllty ot nerve protoplasm vurie Inversely with the stability 0( (19 (,y. drosol statu of Its colloids, cumulation cumula-tion Is gelation, and 1b brought ahout by uugatlv electrical i-luugus. Chemical Chem-ical stimulation la really an electrical stimulation duo to the charm th Ions bear. Negative charges stlmu-Into, stlmu-Into, positive charge prevent ntimu-hitlon. ntimu-hitlon. Tho nerve lmpul.o ! P1,0 to a proRTCH..lve precipitation 0f p;l'"IJs by negative charm, tho n.-K.ulv charges being regenerated by tha'pr ' " "e clpllatlon of each succeeding mass ol colloids. The negative variation. In other words, stlmu 1st as each succssxl-Ing succssxl-Ing segment of tho nerve, and Is regenerated re-generated by the change It produces la the colloids. Anaesthetic prevent precipitation. It Is not the valen.-. In ultimate analysle, which produces stimulation, but the rr.ovmic.it of the charge, chemical solution being thus Identical with stimulation by light, aisllsllna nf llmli'i Blare. In bis Introduction to his fourth list of new double s'ara discovered and measured Willi the .10-Inch telescope of the Lick observatory. Prof. Altk-n glvea the following statistics of general gen-eral Interest. In his systematic search for new double atnm he has pointed, upon and examined lo.noo stnrs. Of these MO had ulready been catalogued aa double earlier observers, but only .lug of then, were a closo as S seconds. In the stars examined Prof. Altken four.d SHI other double atars all unrecorded and all lesa than S seconds In dlstunce. It thus appears that a systematic examination of the whole heavens on this plan would result re-sult In doubling the number of double stars now known. Of Prof. Altken s discoveries about 10 per cent havo distances dis-tances exceeding 4 seconds. 70 per cent have distances not exceeding 2 seconds, sec-onds, about 41 per cent have distances not exceeding 1 second, about 21 per cent have dlstanrr iiot exceeding Vs second. ratnmailo Caan'ng Hevlee. Tho prlnclpul cause of tho spoiling of fruit canned fur winter use la th action of the air Inside, which Induces fermentation of the alcohol In Ih Juice of the fruit, ultimately passing to the final stage of decay, lly ordinary or-dinary methods of canning It Is almost al-most Impossible to exhaust this air entirely, and It Is to aid In this work that the apparatus her shown baa been designed by Wllllsm K. Fredericks Freder-icks of Portland, Ore. The Intention of tha Inventor I to make th machine ma-chine exlinuBt the air from tho rnn and then seal It automatically without with-out allowing a return ot the air from the outside. In order to accomplish this purpose the only change rendered ren-dered necessary In the Jar la th Insertion In-sertion of a valve In tha center of th screwtop. The mcchnnlsm constats con-stats of a cylinder and piston, the latter lat-ter being lifted by a hand lever to sellng Jar by Alanespberle rrssaere. draw the air from the Jar through tha connecting mouthpiece. When the Jur I filled and the cover screwed In placa tha vacuum producer Is set on th cover with the valve open and the piston pis-ton at Its lowest point. As the lever I depressed the piston pulls the air from the Jar, aud when the screwhead at tha outer end of the lever strikes the projecting rod at the bottom ot the cylinder the rod la driven Inward, turning turn-ing the valve and completing the seeling seel-ing process. Th npparutus Is then removed, ta vacuum Inside the Jar reta ilng the vulve In Its closed position. posi-tion. When It la desired to open the enn a turn ot th vnlve admits air and makes It easy to uuscrew th cover. fast Aatoaeoblle. M. Serpolette ha Invented an automobile, auto-mobile, culled "The Hauler Egg." because be-cause It present an egg front to the wind, which bo attained a speed of seventy-six miles an hour. The only reconl achievement approaching th waa W. K. Vandcrbllt's machine, six ty-eight miles an hour, while M. lier-puletta lier-puletta beat Fournler' best record by five seconds. An Englishman purchased pur-chased th machine, paying fll.Ouo tor It. This la the highest price ever paid fur a twelv borne power machine. Itsplefwlta ot arMittata. A Danish scientific expedition to tho west coast of Greenland haa been authorised au-thorised by the government. It consist con-sist of Herr L. Myllus, Erldsea Outher, Count Harold Moltke, painter, and Hcrr Knud Ilasmusacn. The ex-pedltlon ex-pedltlon will spend eighteen months In studying the native and the country, coun-try, and will work Ha way up to Capo York and Peary's first winter station. CbaaMS lor Torto rilra. A Porto Hlcun Industry which promises prom-ises a brilliant future I thut uf raising rais-ing silkworms. Experiments hnv been going on In the Island for more thsn three months, and It has been demonstrated that a silkworm enn he raised which will mane the largest cocoon knowu to naturalists. To Save I-aher. It Is stated at Newport, Me., that new pAtent-made machine cans will he used alinoet entirely In many of the pardlne canning fnrtorloi In that city and vicinity during the com 1 111: season, nml a new soldering machine has bevn perfected that will In time do away with the sealing by hr.n l. |