Show T POPULAR SCIENCE the bottle and the dime Is well I 1 many bottles par tl ti liquor and proprietary luedt civi au bottles when emptied tji or or original linal contents are refi ed d T vita ita spurious liquids and to overcoat this fraud a large number of devieny add greatly to the cost of the bottem with no means of repayment except in the induces destruction by rn consumer sumer increased sales of the genuine gr aulne corn coin kodity the object of the Inver invention ildon here 11 lust rated Is to provide a bottle which the consumers will be induced to destroy when empty the email small extra charge to the con consumed sumet being r returned upon the bre breakage akagi of the receptacle the invention consists in ar ranging a coin in the COSS of the bottle the value of the min being euf suf to tempt the cu cust to fulfill the purpose of the the coin Is placed in a poet et t during the process of manufacture tie vie edges overlapping the outer face 0 02 T the coin so that to remove it a lare lare portion of the bottle must be taken away the patent on this bottle has ben gran granted ted to reginald Kegin ald W of new I 1 ew haven conn safety dress for electr cl col workers an electrician electricians s safety dress has been invented by prof Artem Ar leff and it was lately tested in the high tension laboratory of siemens the dress Is composed wholly of fine but thickly woven wire gauze completely inclosing the wearer including hands feet and head it weighs 13 1 3 pounds but its cooling surface isi to so great that a current of amper s can PASS through the dress from baad to hand for some seconds without perceptible heating effect standing on the ground prof Artem Ar leff drew sparks from the secondary terminals of a transformer which was giving a tension of 75 volts with a period of 50 cycles per second ahe 7 ho inventor concluded his experiments by short circuiting a generator of kilowatt capacity by clutching hold of the ter finals the potential dl di Serence Terence be tween the two being 1 volts and the current passed amperes throughout the experiments prof ar declared that he did not feel fee the slightest sensation f a current passing through the boda bod unicycle sulk A little cramped up room at the corner of michigan and seneca streets contains a few pounds ol 01 0 steel wood and rubber which have been so cun bingly devised and combined com tined lined that they bid fair to revolutionize horse racing and perhaps lower the trotting record to a point under the two min ute roark the new sulk which has but one wheel will weigh from twelve to sixteen pounds less than the light est bicycle sulky road friction will be reduced to one half and on curves centrifugal force will help to decrease rather than to increase friction the unicycle racing machine ie is the invention of J S scarborough the in of the jupiter steel process of the united states steel co detroit free press dark light some five years ago M le bon an bounced that when light fell on one side of certain bodies a thin metal place for instance the other unilla side of the plate gave out non radiations which were later shown to be identical with cath ode rays and which are now believed to be made up of elements of atoms carrying an electric charge th the e ra dictions diat ions says popular science news are analogous to the X rays and to the rays of radium and traverse thin plate of meta freely and discharge electrified bodies in their path sim liar flar effluvia are produced in a great number of chemical reactions and the phenomenon is in fact one of the most common in nature fire protect ng shutters IL it Is not riot often that a japanese in enters an application for a pat ent in the united states patent office product of a japanese inventor and the automatic fire protecting shut ter shown in the picture has consid erable interest tor for that reason as well as for its merit as an invention the double shutter is intended to be mounted on spring hinges which adapt it to self closure the instant the restraining cestra ning device is nith withdrawn drawn under the I 1 eat of fire and at the same time the sh bitters can be easily opened and closed by hand A catch Is ig lj bated on the wall bad of each shut ter to hold the latter open when thrown back and to close the shutters by hand it Is only necessary to pull the cord which hangs beneath the left shutter when the spring hinge will vill perform its part at the same time the connecting rod over the window releases the opposite catch and allows tha the second blind to close over the first to accomplish this result automatically mati cally under the heat of the flames a fusible link or ring Is use I 1 in con lection with the fastening of the first or left shutter and the melting of this ring permits the spring tinges to close the blinds in turn before the heat has reached the point of danger to the contents of the building american railway bridges the address of the chairman of the section of mechanical engineering at the july meeting of the american As so clation for the advancement of science gives statistics of american bridge construction from it the fol lowing particulars are taken A doz en years ago few plate girder bridges were ere built whose span exceeded feet the span of the large plate girders of the viaduct on the river side drive in new lork city ie to feet the channel span of the cantilever bridge over the mississippi at mem aphis measures feet between sup ports and 1 Is the longest of its clasa hiss C in america the wabash system is now building such a bridge at pitts burg whose span Is to be feet the channel span of the cantilever bridge over the st lawrence at quebec Is to have the unprecedented A length of 1800 1 feet this is feet longer than the span of the firth of 1 forth cantilever bridge and feet longer than the span of the brooklyn ausper slon bridge the towers are to be feet above high tide it will ill accommodate a doubt track railway two electric railroad tracks and high 1 ways A woman s invention the ordinary manner of applying powder to the skin Is by the aid of 0 a it fluffy brush or puff which Is insert ed in a receptacle containing the pow der to take up a quantity of the lat ter and transfer it to the face this of necessity occasions more or less sprinkling of the powder upon tha the dresser while the majority of powder receptacles are not at all convenient to carry around when the owner iss Is traveling A substitute for the old powder puff has recently been patent ed by marle L gumaer of new york city this new device consists of a EL perforated face plate of any soft fabric 0 stretched on a frame and connected with the metallic disk at the rear by a band of chamois leather inside which is a colled coiled spring serving nor mally to hold the disks apart the handle screws into the center of the base and is removed to insert the compressed air drives out the pow der powder in the puff tn in operation the perfo perforated surface Is pressed against the skin when the compression of the air inside and consequent discharge through the perforations drive the powder out also causing it to adhere to the surface against which the pule puff Is placed eye strain and nervousness simple eye strain Is at the root of many of the ills of nervous pa in the opinion of dr george S hull HUI I 1 the brightness of california a sunshine sends many visitors to the oculists who in relieving the eyes relieve also the stomach tro trouble irble headache insomnia depression spin al at exhaustion and even tuberculosis for which long health trips are talon with foreign scientists it was recently demonstrated by M george claude in a lecture in paris that liquid air can be aed to extract hydrogen from ordinary illuminating gas A french scientist has examined 3 mosquitoes from algiers and vicinity and finds no evidence evid enco that this genus propagates the mala rial microbe jean maumus recently ligatured the ther end of the vermiform appendix of monkeys dissection after 22 days showed that nature was defending the menaced organ by circumscribing adherences and herr bachanas of the agricultural institute of koenigsburg university after experiments in feeding cows oni ork different foods concludes that the flavor of milk depends more on the thep peculiarities of the animal than on thet vegetables eaten M proves writing in the revue de Psych psychiatry latre tre finds that of the trans vere markings on finger nails normal persons have only 10 per cent whereas degenerates of all sorts have from tour four to seven times that amount critics of these statistics point out that the markings vary with the ghyst cal cat condition of 0 the subject 4 t sla |