Scientific American 342 November 6, 1909. … A fact which is incidentally brought outfit. Jay Black, Pres., 60 Beverly St., Boston, Mass. out by these observations on the return Inquiry No. SOIS.—For manufacturers of "Wvdt's THE'BEST LIGHT TORREY Electro-Catalytic Sparking Plug." of birds to a given locality, is the appar- SUPERIOR TO TWO…
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