Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 57
sts. — Contributed by J.E. Dussault, 828 Chs. Borromee St,Montreal, Can. Cheap Telegraph for Learners An inexpensive telegraph instrumentcan be made by fastening anhell magnet, A. to a small wooden box,inch aa a cigai box. | eet-iron arma- ture is p rovi d edWith B tapper. B, which consists of… … Scrape off the bark just enough tocome to the first light under coating,which is somewhat moist. With alead pencil make an outline of the in-scription to be burnt on the tree andbring the rays of a large magnifyingglass not quite to a fine focua on the The tree will be burnt along the ^=\ JoK] Line…
Handicraft · Amusements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
