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ud be -pi lnterest ler in, Leévillage. By JE. W. Atkiso Man s originial- habitation. of the earth was .imited to small areas Rame within. the t orrid. zone. He had to endure ilig summer heat4 for' if hie ventured to the north or souh hie was in jeopardy of his very life ivith the' oming of wnter. But histor has been. a record of mian's' conquest of, natural environ- mient. As, animal skins were made into clothing, crude shelters were, constructcd and fire was discovered, mai found hie could survive in re- gions with severe climate variations. The refinements, in these three funda- mental methods of providing. pro- tection against winter's attack, have, up to'the beginning of the twentieth century, included better building con- struction, better clothing and the de- velopment of facilities to first bringý fire into the house in fireplaces, then i base burners andl inally ini cen- tral heating plants. Ail of these steps of progress have primarily been pro- tective measures and littie was known about the real requirements for ideal comfort. Little or no attention was given to relief, from sunmer's heat, and sweat. *Used IlnutrWalyî The beginning of air conditioniiîg for comfort began in industry and 4 wvas flot intended for comfort at ail, but to control. the air conditions during- processes of manufacture so, that automatic machines 'could func- tion smoothly and steadily and pro- duce a standard product. A movie theater owner was the first to see' the possibilities of overcoming his Oumsumnier sluinp by utilizing "manu- factured mweather.". Today almost every mo de rn. theater lias year roôund.air conditioning. Every city, ini the country now has restaurants, stores, Offices, hotels and factories ilsinig this new contribution of science, to give us controlled weather in sunîmer or winter. Thrfee Maior Factors There are three major factors ini- creases are prevalent u n neé r sucni conditions. To- the layn'en an almost unbelievable amount of water nîust be evanorated to m e e t accepted standards, for winter, heating* On some days as, much- as fifteen gallons: above 1,000,00 particles. The average person inhales over. one, aend a half pounds of dirt each year. Modem clteaners wi l remove nearly al of -this 4,dirt. Ail of these factors are under con- tinùôus control ini commercial or in- dustrial > air, conditioning installations. It is.more and more becoming a tru- isi tbat. many of us nowv workc, ahop or are entertained in comfort onlv to ret urn to our homes to wonder why we do, not have equal cornfort at home. Manufacturers and their engineëers have recognized this> challenge -and art no* intensely'at work to adopt and perfect home -air conditioning systems. Considerable progress has, already' been made. Already ideal conditioing for the winter period is an accepted accomplishmentand the, saine equipment.is adoptable for pro- vidmng aummer eomfort. Such ans in- stallation '15 fow on exhibition in Wil- mette at the new model home just opened at 2734 Blackhawk road in the Indian Hill Estâtes section. Motor-Driven Fan In this home the centralized con- ditioning plant is located in the base- ment. Conditioned air is supplied to - each rootu through a trunk duct sys- tem. Positive control of air distri- bution, the rate of air changed and LEBOLT'8' ARE CLOSING THEIR GROUND FLOOR STORE AT 27 NORTH STATE STREET Theý fiefithat LEBOLT'S wholeésale eutabishment wiIt remaiin:business en t he fiflh floor of Ibiis building s your assurance C& service end satisfaction. Illistra sud OFF This susait mew baga wltblu tb. reaeb of oe: ment boeeoftthe W -ON AL WATCHES NOWDIAMOND $137,50 RINGS' cette wateb l e Dw W>IING RINS ewy pars ...Meve- -ouest Swl;S wateb ,FINE JEWELRY manlafa trerS . . . fufly guarantfl LEBOLTOS . . . .17 JeweI mevement adjusted te positions amnd<eupertRre omlY the blogbest quallty watebes bave this âne adJustument. PIatlnum case set wltb 92 seleeted diamonis full oftlire and brIl. llaury. A traly seusatlonal value. AND HUNDREDS 0F SMALL ITEMS SAVE 50,% ON CHIRISTMAS CIFTS G'ive Photographs by U3rnie- of Yo'n Chidren Friends Who love Sheridan Road overlooking Belmont Harbor - B. B. WILSON. Reident Manager Bituerweet 2100 end , elatives ther will ap. BEIRNIE STUDIO '1$ etter Pictures-Better Values" 1623 Sherman Avenue, Evanston. Tel. University 10" 1/2