The National Geographic Magazine, Volume 72National Geographic Society., 1938 - Geography Indexes kept up to date with supplements. |
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Page 426
... wire lines than to use the complicated terminal apparatus needed for sending several messages over a single wire . You might think that sending several con- versations over the same wire would be like pouring tea , coffee , and milk ...
... wire lines than to use the complicated terminal apparatus needed for sending several messages over a single wire . You might think that sending several con- versations over the same wire would be like pouring tea , coffee , and milk ...
Page 427
... wire is mounted on the dog sled . SHE IS BRAIDING A COTTON OVERCOAT ON TELEPHONE WIRE This. Photograph by Ranapar wire looks solid , but it is made up of atoms , and each atom contains much more empty space than solid matter . In the ...
... wire is mounted on the dog sled . SHE IS BRAIDING A COTTON OVERCOAT ON TELEPHONE WIRE This. Photograph by Ranapar wire looks solid , but it is made up of atoms , and each atom contains much more empty space than solid matter . In the ...
Page 428
SHE IS BRAIDING A COTTON OVERCOAT ON TELEPHONE WIRE This girl and her machine weave a continuous braid of unbleached cotton thread on the outside of rubber - shielded telephone wire , covering 350 feet of wire per hour . Telephone wires ...
SHE IS BRAIDING A COTTON OVERCOAT ON TELEPHONE WIRE This girl and her machine weave a continuous braid of unbleached cotton thread on the outside of rubber - shielded telephone wire , covering 350 feet of wire per hour . Telephone wires ...
Contents
Machines Come to Mississippi By J R HILDEBRAND | 263 |
Magnolia State Mosaic Mississippi 26 ills in color from naturalcolor photographs | 279 |
Miracle of Talking by Telephone By F BARROWS COLTON | 395 |
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