be copied down, in a dish which contains the the side wall. There are, then, two valves of this kind S, is about to pass from lock, B B,, to the reach, C. To following transferring solution : Distilled water, 16 0z.; this effect, at. N the gate, P’, taken from its chamber, alcohol, 90°, 5 0z.;… … to thecarriage. The object of this arrange- this has to be done in the dark room, that ment. is to start the gate before sliding it Fig. 2.-THE GATE OPEN. is, at lamp or gas light. The plate is then forward and to prevent its rubbing against dried once more and exposed to direct sunlight for easy.…
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