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the in Dr. Bockstahler briefly sketched the efforts of the Greek philosophers beâ€" fore Christ and their getting the first elues of a vacuum and of the acciâ€" dental discovery by the Duke of Tusâ€" cany in digging a well of the part air plays in our everyday routine; of the interest shown by Galileo in the exâ€" periments, of Torricelli‘s work with a tube of mercury and of the later exâ€" periments in Paris by Pascal; of the great interest shown in these scienâ€" tific labors by German, British and American investigators. Then for two hundred years the possibilities of the vacuum were entirely ignored, the speaker said, and continued as folâ€" lows: Dewar‘s Discovery "In the middle of the last century Dewar, an Englishman, became inâ€" terested in making and storing liquid The small school boy who defined a vacuum as a great empty place where the Pope lives has not visualâ€" ized nor understood the realimporâ€" tance of the vacuum in its relation to the home radio set nor anything of the dramatic effort over hundreds of years which has featured the discovâ€" ery of the weight of air and relative problems, according to Prof. Lester I. Bockstahler of the physics department of Northwestern university who talkâ€" ed of vacuum and the radio recently from Station WMAQ of The Chicago Daily News. DISCUSSES VACUUM AND ALLIED TOPICS VALUE IN EVERYDAY LIFE Professor Tells How Vacuum In Air Was Discovered and Relaâ€" tion to Weight of Atmosâ€" phere; Other Facts Bowman‘s Milk is cool and refreshingâ€" the ideal beverage for thirst. Its creamy richness furnishes quick energy, too â€" gives you vim and vigor to carry through the hot, sultry days. Use Bowman‘s Milk in making summer desserts. Dieticians recommend it in warm weather menus. "More milk and less heavy foods" is their expert advice. Decide now to try Bowman‘s Milk. Note its delicious flavorâ€"the sweetness and freshness. See how«rich the cream is. And remember, it is perfectly pasteurized to assure its purity‘ , Telephone your nearest distributing sta: tion or order from any of our courteous milkmen. Milh / DAIRY COMPANY cool and refreshingâ€" for thirst. Its creamy quick energy, too â€" vigor to carry through »04 k VSR Affects Everyday Life "When the methods of making vacâ€" uum reached a certain stage of develâ€" opment new fields of application and investigation were opened. It is another story to tell how the vacuum effects our everyday life, how it helps to make the home, the factory, and the hospital repder our lives safer and more comfoftable. _ We may call to mind just a few of the things the vacuum has made possible and in what widely divergent fields it ‘assists. There is the thermos bottle, the elécâ€" tric light, the carpet sweeper, the Xâ€"ray tube, the photoâ€"electric cell which enables pictures to be transâ€" mitted by wire and wireless, the thermionic tubeâ€"the master weapon of the radio engineer, the marvelous perâ€" formance of which I need not remind you. This tube is now used in pracâ€" tically every field of investigation. It is unsurpassed for making delicate measurements. Our present know!lâ€" edge of the nature of electricity and matter is due largely to the developâ€" ment of the vacuum." air. He found that when the liquid| URGES BONDISSUE | â€" was placed in a vessel with double TT walls and the air removed from beâ€" ,'“?Dmp‘m tween the walls the liquid did not boil 4 o. [ fls away so quickly. The molecules of M‘ Illinois â€" Sportsmen‘s air between the walls act as carriers| _ League Says Conservation of heat from the outer to the inner Demands EW walls, thus causing th?n:iqnid to boil Gncamptrre | ht jeed away or evaporate. e fewer the | number of molecules the less the & t\jmty-five million dolht bond isâ€" evaporation. So the problem resoived | *"° for purchase and development of itself into getting rid of the air moleâ€"| state forests was urged by H. C.. Norâ€" cules or creating a vacuum. (Experiâ€"|cross, president of the Illinois Sportsâ€" ments with various pumps and differâ€"| men‘s league, in a communi¢ation reâ€" ent absorbing substances enabled De.| ceived rcently. "k war to get a relatively good vacuum.| This bond issue is similar to one Here is the invention of the thermos | passed by the last session of the legisâ€" bottle. _ lature in Pennsylvania. It will be A twentyâ€"five million dollar bond isâ€" stie for purchase and development of state forests was urged by H. C. Norâ€" cross, president of the Illinois Sportsâ€" men‘s league, in a communication reâ€" ceived rcently. Sikle: "The forest and timber shortage in Illinois is serious. If the prosperity of our state is to continue, the‘restoraâ€" tion of forests is imperative.: The restoration of our supply of song and game birds, game and furbearing aniâ€" mals and purity of water supplies in streams and lakes, are closely reâ€" lated to development of forests,â€" In commenting on this proposition for Illinois, which was the main issue before the Illinois Sportsme,’n'l league at its annual meeting held‘ at Belleâ€" ville, Mr. Norcross said in part: This bond issue is similar to one passed by the last session of the legisâ€" lature in Pernnsylvania. It will be submitted to the voters of that state at the election this year. _ "All available lands for hunting and THE HIGHLAND PARK PRESS, HIGHLAND PARK, ILLINOIS ol Q R‘Ufi&';n A Donse Brotners SenpnaNn I ‘895/ | | fishing will soon be in the hands of a comparatively few wealthy men. The people of Illinois must act at once to save for themselves and their chilâ€" dren the American principles of free enjoyment by every citizen of these valuable sources of healthful recreaâ€" should be of interest to practically every person in the state, as it means hunting, fishing, camping and other outdoor recreation for the man in orâ€" wealthy. It will cost at least $25,000,â€" 000 to buy the land the state should own. â€" Future generations will enjoy the benefits, so they should share the alone by the bond issue we propose." The "waâ€"hoo" of the Indian. 'will mingle with the "yipâ€"yip" of the cowâ€" boy and cowgirl when the second anâ€" nyal Chicago rodeo gets under way in Soldiers‘ Field, Grant Park, Chiâ€" cago, August 14, giving an additional touch of color to this crossâ€"section of the real west which the domestie and foreign commerce committee of the Chicago Association of Commoree has arranged. People are surprised to. learn that this beautiful and sturdy car now sells for ©895. . ‘They have heard so much about its exceptional value that they are under the impression it sells for a higher price. Moreover, the Sedan possesses all the roominess and character of closed cars that call for a much greater investment. ‘ It is substantial in appearance because it is subâ€" stantial in fact. And serves its owners far beyond the period usually expected of a car at any price. The body is all steelâ€"safe, sturdy. fireproof, and smartly finished below the belt line in coolie blue lacquer, with cartouche yellow stripeâ€" upper body in black lacquerâ€"shields and fenders in black, ovenâ€"baked enamel. Blue Spanish genuine leather upholstery, removâ€" able rear seatâ€"back, and optional wood or steel wheels are included among many other features that commend themselves forcefully to the buyer. Many who expected to buy a cheaper car, now find that Dodge Brothers product is well within their means. Many who had expected to buy something more expensive, now find everything they could possibly desire in these smart and dependable vehicles. 3 See the cars for yourself â€"and investigate our attractive timeâ€"payment plan. ' Touring Car â€" â€" â€" â€" â€" $795 Roadster â€" â€" â€" â€" â€" _ 795 Highland Park A. G. McPherson of HWimnion n inn on niondapiriennnern ramtecamitiise mss seu £. o. b. 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