30 … I was therefore unable to throw two discs upon made with the Welsbach the screen at the same time, or to adopt the Incandescent Gas Burner, more scientific method of lighting half of one and with more or less suc- disc with each illuminant, shutting off the light cess. The extreme fragility from…
Fretworking and inlaying in wood · Photography for amateurs · Hobbies that pay · Stamps and stamp collecting · The magic lantern and how to make the slides · Bazaars and how to decorate them · An electric scarf pin · Cycling · Football and athletics · Decorative use of waste material - mosaic · Venetian ribbon or bent iron work · Weekly presentation design · Prize competitions · Correspondence
Internet Archive · Public domain (published before 1931). Free to use for anything.
