hings were done years ago; but come to the front in plain view. (Fig. 3.) reel and turning it through a half revolution. The others find that by adopting improved methods and Still another idea in a single slate is as follows : A n operation of focusing the plate and locking the reel is apparatus,… … has an objective and two finders. The glass plates There has. probably been nothing that has made Tig. 1—OBDINABY SLATE WITH FLAP. used are placed in regular order on a long strip of tough more converts to spiritualism than the much talked of paper, each being held in position by a mat which "Slate…
Torpedo · Fiber · Acetylene · Cotton · Slate · Torpedo boat · Feet · Hard spun · Forestry preservation · Scientific American · Long fiber · Years ago · West coast · Traction engine · Torpedo boats · Dark blue
Internet Archive · Public domain (published before 1931). Free to use for anything.
