Popular science monthly . The lumberman calmly smokes his pipe as heoils the blocks at the top of the swaymg pole to recognize in himall the qualitieswhich go to makeup a nervy stccplc-(limber. He thinksnothing of doingan ordinary>teeplejacks jobbefore breakfastand then trees andsetting off dyna-mite blasts untilthe supper bellrings. The accompany-ing photographshows a logger inthe act of oilingtwo large was hoisted tohis dizzy position!)>? a donkey en-gine, and as he satthere, straddlingtwo thin steelcables, he was somuch at home thathe smoked his large
Popular science monthly . The lumberman calmly smokes his pipe as heoils the blocks at the top of the swaymg pole to recognize in himall the qualitieswhich go to makeup a nervy stccplc-(limber. He thinksnothing of doingan ordinary>teeplejacks jobbefore breakfastand then trees andsetting off dyna-mite blasts untilthe supper bellrings. The accompany-ing photographshows a logger inthe act of oilingtwo large was hoisted tohis dizzy position!)>? a donkey en-gine, and as he satthere, straddlingtwo thin steelcables, he was somuch at home thathe smoked his large pole is agin-pole, erected tolift the logs. 40 PopiiUu- Science Monlhbj. Automatic Word Signals forAutomobiles DIFFKRIXC. from other forms oftraftic signals fitted on automo-biles in that the direction the car isabout to take is indicated at both frontand rear and that words are used to de-note those directions, the no\el typeshown in the accompanying illustrationsconsists of two metal boxes, one on thedash and the other at the,rear above theregistration plate. Each of these boxescontains an opening before which thewords Ahead, ^Right, and Stop can be displayed atwill by means of an electric push-buttoncontrol attached to the words arc cut into an endless roll ineach box, the mo\ement ot tin rollbeing clectricalK controlled and at night. Thcontrol hasbutton fori-ach of thewords signa 1Aiiead isalways d i s -played to in-dicate thatMl o \ e m (.• n Ilint is changedas dcsiretl bypushing one olllie oilier bnl-tons. Tlie con-trol bullous are interlocking, so that onh oiie signalcan be shown at a time. The s
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
