Popular science monthly . The plates removed in bulkfrom the tank after the fixingbath. They are now ready to bethoroughly cleaned and dried Toys That Obey Your V^oice Talk, sing, whistle, clap your handsand they perform their antics for you. WITHIN the last two or tlircuyears a number of inventors[ia\e Uirneti theiraUention ^to the making of toys. Tiie resuit has been a series of con-tri\ances of great originality and novelty. As anexample of thesenew arrivals,the various setsmade up of toyI-l:)eams andcog-wheels andsuch by which>oung buildersconstruct mar-vels in the wayof bridges andengi
Popular science monthly . The plates removed in bulkfrom the tank after the fixingbath. They are now ready to bethoroughly cleaned and dried Toys That Obey Your V^oice Talk, sing, whistle, clap your handsand they perform their antics for you. WITHIN the last two or tlircuyears a number of inventors[ia\e Uirneti theiraUention ^to the making of toys. Tiie resuit has been a series of con-tri\ances of great originality and novelty. As anexample of thesenew arrivals,the various setsmade up of toyI-l:)eams andcog-wheels andsuch by which>oung buildersconstruct mar-vels in the wayof bridges andengines andclocks, etc.,may be anothertoy consists oflong woodenrods which maybe put togetherin such assorted ways that anythingfrom a windmill to a realistic airship ma>-come into being. Rut for sheer novelty,a new st\le of toy devised by a NewYork inventor. Mr. H. diristian Berger,has easily strongest hold on the atten-tion. E\erybody knows that a loudsound may so jar a tele-])hone transmitter that itwill cause a wa\e of elec-tric current to flow throughan electromagnet, or insome cases, a relay, amcause the electromag-net or the relay toact. If the jar isgreat enough to causethe electromagnet torelease a spring orle\er y
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
