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The Mysterious Circles

The Mysterious Circles image
Parent Issue
Day
12
Month
March
Year
1875
Copyright
Public Domain
OCR Text

Cut from a card two disks or circular pieces, about two inches in diameter ; in the center of one of them make n hole, into which put the tubo of a oommon quill, one end being even with the surface of the card. Make the other piece of card a little convex, and lay ite center over the end of the quill, with the concave side of the card dovmward ; the center of the upper card being from oneeighth to one-fourth of aninch above the end of the quill. Attempt to blow off the upper card by blowing through the quill, and it will be fouiid imposible. B. however, the edf?es of the two pieces of card be made to fat eacli otner accurately, the iipper card will be moved, and sometimes it will bs thrown off ; but wlien the edges of the card are on two sides sufliciontly far apart to permit the air to escape, the looso card will retara its position, even when the current of air Bent against it be strong. The experiment will succeed equally well whethor the current of air be mado frorn the mouth of a pair of bellows. When the quill ñts the card rather loosely, a comparatively light puit of air will tln-ow both cards threo or fonr f eet high. When, from the humidity of the breftth, the upper surface of the perforated card has a little expanded, and the two opposite sides are soinewhat dopressed, these do-iToaaoii eiilpfi ïniiv bfi (lial.iiictlv seen to ise and approach the upper carel, diectly in proportion to the current of air. ijiother f act to bo shovn with this simple upparatus appears equally inexplicable vith tho former. Loy the loose oaard ïpon the hand, with the concave sido vp, blow forcibly through the tube, and it tho samo time bring tho two eards toward each other ; -when -within threeaighths of an inch, if the current of aribe strong, the loose card will suddenly rise, and adhere to the perforatcd card. f the card through wliich tha tube passes have several holes made in it, thé loose card may be instanüy tlirown off by a slight puff of air. I A Heboeue bï Mistase. - One dark night not long ago, a burglar entered i prívate reuidence on Broadway. On ascending eme flight of utaire he obBorved a light in a chainber, aud, whüe delibcrating what to do, a large woman middenly descended apon hira, seized hita by the throat, pushed him down tliïougli the hall and foroed him into the otreot before he had time to think. " Heroic Bepnlse of a Bnrglar by a Woman " was the way tho story was told the nest day. As frionds calledand i gratiilatwl her upon her courage, she claimed, "Good gracious, I didn't know ' it was a burglar. If I had I should hare i been frightened to death. I thought it í was my liusband come home drunk, and ! I was determinad he shouldn't stáy in

Article

Subjects
Old News
Michigan Argus