e apparatus that I employed at I the heat rays; (3) of a large condenser formed of plano- as soon as the armature, r, of the electro-magnet, e, is attracted. At this moment the finger, i, becomes free, that time are described in my treatise entitled " La convex lenses; and (4) of a plane mirror… … in a derived circuit (Figs. 4 to reflected solar light. The Fig. 2.-APPARATTJS FOR PHOTOGRAPHING THE LARYNX. and 5). principal improvements in- As long as the button, n, is troduced by Dr. French pressed, £will remain opposite consisted in connecting s, seeing that the finger, m, is with the…
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