Show What th the World Is Doin As Seen by Popular M Mechanics Magazine I I I i j jI I S PLUG Simple Method of Foiling I S the dic Auto Thief bief ThiefS S A pimple pIe pIe- and effective method of foiling auto thieves or is shown in the drawing Drill and tap tapa a hole in the intake manifold for a aI s m. tube fitting and connect I a a. length of pipe or tubing to extend back to the dash The open end is is' is I flared out a trifle to receive a s wooden j I plug ring made to fit in in snugly When the plug lug is is in in place pl the engine will run normally but hut when the plug is removed re removed re- re I moved so much aids airis air is admitted to the cylinder oLinder that no combustion tion can an take place and therefore the car cannot very well wen be run ot off on m its own power If however the en engine ne is started i by excessive use ut of the choke the firing I will be so so erratic that the thief will willbe willbe willbe i be glad to abandon the car ia in a block i or BO so Of course the he plugged end of I I the ilie tube should be l located ted in an unI un- un I I r behind the instrument ment meat board I C C C Glasses Made for Color Blind Ii to Correct Defect in Vision Color blind persons may be able to I differentiate various shades as a accurately uI u- u I ly as others if special glasses lasses now i P. devised by opticians prove suc suc- The lenses in the spectacles I are re irto to to be colored and w will ll seek to adjust adjust adjust ad ad- just the eyes to record properly the varying wave lengths of light In Inability In ability to perform this function is said id to be the chief cause of color blind l Electric Furnace for Heating Knives Prevents ts Fires Furniture makers before their goods are permitted to be shipped from the factories carefully inspect all pieces for dents or s that may o occur cur in handling the articles When any such BUch imperfections are found they are filled in witha with a special kind of wax that t must be melted and worked into the wood with knives To eliminate the danger of ot fire from rom blowtorches or other implements implement used to heat the wax and the tools a a. small electric furnace that can be placed upon the workbench and supplied with current from the light socket has been invented It will wiil hold two knives knifes a at once is furnished with an base and the metal in the heating chamber is of a kind that will not rust or scale The heater requires but little cl electricity and weighs only two pounds Word Cross Puzzle Centuries S Old Seen en enin in Ancient Disk Although the word puzzle idea as it is now presented for the entertAinment entertainment enter enter- and dilt distraction Lion of millions L is said to have originated in the fertile mind of a newspaper reporter there is isa isa isa a possibility that this form fonn of brainteaser brainteaser brain teaser really dates back to about 2000 B. B C. C At least such BUch is the indication of ofa a copy of an an ancient terra cotta disk in the museum of the Johns Hopkins Hopkins Hopkins Hop Hop- kins uIl university The original came Ci from the island of Crete and bears on both sides a continuous spiral line of picture writing No one has b been boen en able I Ito to decipher it hence it is not known I whether the legend begins begins' at the center center cen cen- I ter and runs outward or the reverse I or whether the characters should bo be i connected vertically or horizontally The curiosity is known as the disk and although a German scholar several years ago asserted he had found the key to the puzzle others re refused refused re- re i fused t- t to accept his claim I C C C Novel Sliding Gate I IOn I On farms where high fences fencz are am I used a s sliding gate of the kind shown in m the drawing will prove to be con con- I. I It can be made from materials materials materials ma ma- available almost everywhere I IThe The rail is a n length of or i pipe supported at each end by an el elbow elbow elbow el- el bow a short nipple and a flange the tho latter being securely screwed to the post poet The gate hangers are made of flat fiat iron iron screwed to the gate and bent over ocr to slide easily on the rail Grease is applied to the rail every two or three months to reduce the friction and permit the gate to slide noise noise noise- lessly For large larce gates it is adv advisable I I I S 4 S. S i I I to provide a stop on the o outside near neal I the bottom to prevent them from swinging outward in a strong wind i C C C I The transmission ion range of oC the high high- power radio stations that terminate in inthe the United States State totals total over i I miles I |