Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 238
o-magnetic instruments, naturally suggested theapplication of this power to the purposes of the artsas a mechanical agent; and numerous experimentshave been made with this view, but hitherto withoutsuccess. Professor Henry was the contriver of thefirst instrument whose motion depended upon… … lll!i!l!!i!iOi!l!!lii!lllli|illi!lliilllllHlllll!l!llllll!ll!l:lll!l!lllllililll» 222 DAVISS MANUAL. no attempt to apply this power to practical purposesThere are obstacles of a purely mechanical characterin the way of its employment; these, though im-portant, are not perhaps insurmountable. But…
