Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 158
ks. Cut the required number of zinc and copper strips12 cm. long and 3 mm. wide. Bend them by means of aform made by driving small nails in a block of wood in theshape shown in Fig. 65. Saw cuts 3 mm. deep and 28 mm.apart in strips of dry pine wood 8 mm. thick, 28 mm. wide,and 34 cm. long, ten cuts… … Fig. 66. in place in the grooved end pieces, fastened firmly withnails, and the whole inverted for a few minutes in a pancontaining shellac varnish to the depth of 2 cm. to insureperfect insulation on the part of the wood. The batteryis now completed by springing a 1 drachm homoeopathicvial over…
Physics
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