onauts who are attacking the problem of aerial navigation by means of dirigible purpose is supplied as solid glass, containing about airships has been increased by the advent of Leo 70 per cent of silica, and is thus practically insoluble Stevens. Manhattan Beach has recently been the in cold… … ported. From our _ illus- conditions, is waterproof, tration it will be seen that and is a complete electric insulator. The remark- the motor is placed ap- proximately in the middle able immunity of the ma- of the frame, and that the terial from climatic aeronaut takes up his po- ehanges may be…
Internet Archive · Public domain (published before 1931). Free to use for anything.
