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Show t Incandeactnt Lamp Reflector. How fnr would It have liei-n I""". . hie to advnncH tiilnem method to- ward their present hixli ntsmlard. and) j what would ho the volume of ii- nrB traniuctnd thl year, were w- p Mill hampered with the candlea or plno fanoti of our forefather aa a , mean of lighting it ore, o fliers and f redldencea? It la the convenience of f I the age w hich tiavo aided moat In In creanlnR the volume of dally tranftan- V tlona In the commercial world to their I preaent ennrmoua amount, and no f . (treat er convenient e haa come to Mm ouHtnena man than the method of lighting the denk, office and manufne- hirtnft plant. What would our an era- j tore i f Icr than too yeara hack have thought of tapping a pair of wlrea at f any point and Inserting a little glaaa ; bulb, tun-lug a button and obtaining; 1 a light better than a doten of tholr jf candlea could afford them? To-day It f haa become auch a common affair that p we seldom panne to think of tha Ira- S pmvement, but almply take It for I granted, aa we have learned to do th i thousand and ono other thlnga which t the Inventor haa placed at our din-' Donal. t Hut even thla Utile glani bulb, with It raya of light Mtreamlng out all anmnd, la open to Improvement. In almost every uae to which thla lamp U put there la no neceaalty for the ray which Illuminate the apace abova the carbon film, and thla Inventor propose! pro-pose! not only to nhut them out, but to reflect them downward agnln. where they will Inrreane the brilliancy of tho vertical raya. Thla la accom pi tuned by the uno of the little metal reflector ahown In conjunction with the Incandescent eluctrlc light In the picture. The under surface of tbla Increases Power ef End Raya. I shado la nickel-plated and highly pol- I lahed, serving to doltect tba light raya j which have an upward trend. To at- J tach It to the lamp, the bulb must he L unscrewed and Inserted between tha r adjustable wings above the reflector! s pntper. A. J. Pardrldge of Chicago la I the Inventor. Wind's Mystery. Tha meteorologist Is gradually divesting di-vesting the wind of Its mystery and la able to explain convincingly how and when It orlg nates. The study of a great number ot observatlona takon simultaneously all over tho country, and In fact all over two contlnenta, baa enabled the oxpert to foresee Just when at night the layers of air near the earth become cooled, and as cool air la heavier than warm air, a law or physics Hint Is generally appreciated appreciat-ed theoretically, but usually overlooked over-looked practically, this heavy air tends to move down the hillside. Tho tendency ten-dency becomes after a lime sulllclcnt-ly sulllclcnt-ly pronounced In prudnco a general downhill movement, eventually resulting result-ing a pcrroptlhlo breexe. That la what la commonly designated designat-ed locally as "the mountain brccxe. and which from Its origin la practically practi-cally In one constant direction, though the Intervention of powerful etorms may temporarily reverse the customary custom-ary movement. Vice versa during the day tho presence of warmer and therefore there-fore lighter air near the earth causes a movement of the atmosphere with an upward tendency, creating tha so-called so-called valley broeios. In certain favorably fav-orably situated localities tho appearance appear-ance of the mountain or the valley breeze la as regular as clockwork, tha transitional period being marked by a calm. Philadelphia Kocord. Alloy That Defies Temperature. Consul (luenther of Krankfort reports re-ports tho Invention by Dr. tlulllaune or an alloy or steel and nickel which haa the useful property of not expanding expand-ing with Increase or heat, retaining' practically the aame volume undor all changes of temperature. Ily altering; tbo proportions of the constituents, a metal la obtained which contruete whon heated. The utility of an alloy which maintains an unchanged volume, vol-ume, dosplte changes ot temperature, la very great In making accurata measuring Instruments, clocks and watches. Tha new alloy called "Invar" "In-var" haa already been used for pendulums pen-dulums and Instruments for tropical surveys with excellent results. |