โ Scribed by C.
No coin nor oath required. For personal study only.
~',43 ]~.t'j~'~'i~I~.~!t~Ls ~2~o~ ]~(ti[,'~.
[gour. Frank. Inst., New Eleetro-Magnet.--C%tmbrier increases the power of electro-magnets by augmenting the-extent of active surface at the extremity โข ,,f the core and o~' the oscillating armature. He indicates various ways of doing this, which are all nearly equivalent in effect; he ~mllows the core and gives to the armature a prqject.ion fitting into the .cavity, or he attaches the projection to'the core, making it. fit a cavity โข ~f the armature. A battery of eight or ten elements is as efficient, with his arrangement, am fifteen elements with an ordinary electromagnet. The residuary magnetism is not increased; it appears rather ao be weakened.--(Jompte, l~e~.d~,~.
C.
๐ SIMILAR VOLUMES
earth in water. They can be purified after using by washing or burning. When impregnated with carbolic acid they also become useful as disinfectants.--])ingler's Journal. . C.