5Crientific Amerinin. SCIENCE IN TOYS. MAGNET AND ROLLING ARMATURE. MAGNETIC TOP. needles while the other pole will draw them together. MAYER'S FLOATING NEEDLES. -41P 4 4 English Hallway Couplings. The Medical Possibilities of Photography. might pointlo a new methodof medical diagnosis.' MAGNETIC CURVES. FLOATING MAGNETIC FIGURES. ELECTIUU LOCOMOTIVE., scientific american, 1887-02-12


5Crientific Amerinin. SCIENCE IN TOYS. MAGNET AND ROLLING ARMATURE. MAGNETIC TOP. needles while the other pole will draw them together. MAYER'S FLOATING NEEDLES. -41P 4 4 English Hallway Couplings. The Medical Possibilities of Photography. might pointlo a new methodof medical diagnosis.' MAGNETIC CURVES. FLOATING MAGNETIC FIGURES. ELECTIUU LOCOMOTIVE., scientific american, 1887-02-12


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