Popular science monthly . microphone is employed asa transmitter. A Motor-Wheel for the RailroadVelocipede RHJ)IXG the rails ona\elocipedepro-. pcled by a motor-wheel, the track-man traveling to make repairs has as])ecial car of his own just as the railroadjiresident has. For a gotnl many yeari;the trackman hashadhis\elocipedeandhas hand-i)um|)e(l it up hill and downdale until all no\ elt\connccteil with thevehicle has long since been the introduction of the motor-wlieel, however, he is again in the lime-light. He can recline in his seat, operatethe motor, and sail o\er the trac
Popular science monthly . microphone is employed asa transmitter. A Motor-Wheel for the RailroadVelocipede RHJ)IXG the rails ona\elocipedepro-. pcled by a motor-wheel, the track-man traveling to make repairs has as])ecial car of his own just as the railroadjiresident has. For a gotnl many yeari;the trackman hashadhis\elocipedeandhas hand-i)um|)e(l it up hill and downdale until all no\ elt\connccteil with thevehicle has long since been the introduction of the motor-wlieel, however, he is again in the lime-light. He can recline in his seat, operatethe motor, and sail o\er the tracks with-out any expenditure of energy. The motor-wheel can be attached tothe veloci|)ede and taken off withoiumaking any alterations. A casting whichtits between the two lower rails of the\elocipcde serves as the comiecting holds the motor-wheel sccureK in))lace, so that it cannot move either tothe right or left, but stays constantly onthe balls of the rail. The attachments])ermit of the free moving of the can rcchne in his scat, oi>cratc llic motorover the trucks without expending energy Popular Hciencc Moiitlih/ 743 The Permanent Wave of a WomansHair and Its Secret ANEW process for making a permanentwaw in feminiiu tresses has beeninvented I)\ a Now \()rk man. First of all the iiair is di\idcd into agreater numher of strands than has beenthe usual practice. The part of eachstrand nearest the head is wrapped roimda small ciirliny; rod. As it is wrappedthe hair is slii;luly twisted. The part ofthe hair wliich lias been vva\ed previouslyis allowed to fall free. The coiled around the turlersare Ireatetl with a su|iersaturated salinesolution in the form of paste. Thissaturated coiled portion of the hair isthen inclosed in a wrapping and heatetlby encir;lin . the coil.^d hair with asuitable hcator. A of 800 degrees ismaintained for aI)out twcnt\- the heat is turned olT fjr fcjurminutes, and turned on again for fi>urminutes. .A
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
