Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 689
TELEGRAPH-SOUNDER. justed to produce the proper click. When thesounder is at rest the rear end lies on the brasstack and the armature is about quarter of aninch above the magnets. In Fig. 31 are shownthe connections of two telegraph stations. JEREMF AND JOSEPHINE. (A Duet.) By Laura E. Richards. As…
Children's literature
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