The National Geographic Magazine, Volume 110National Geographic Society, 1956 - Geography Indexes kept up to date with supplements. |
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Page 49
Hunting the Heartbeat of a Whale A Scientific Expedition Sails a Lonely Mexican Lagoon in Search of Clues to the Mysteries of the Human Heart BY PAUL DUDLEY WHITE , M.D. , WITH SAMUEL W. MATTHEWS Barnacled Head Erupts a Gray Whale " Spy ...
Hunting the Heartbeat of a Whale A Scientific Expedition Sails a Lonely Mexican Lagoon in Search of Clues to the Mysteries of the Human Heart BY PAUL DUDLEY WHITE , M.D. , WITH SAMUEL W. MATTHEWS Barnacled Head Erupts a Gray Whale " Spy ...
Page 58
... whale , we thought con- fidently , would drag the sea sled behind it . From the instant the sled was attached , radio signals would broadcast the whale's heart- beat back to a receiver aboard Dorado . A few minutes would be enough to ...
... whale , we thought con- fidently , would drag the sea sled behind it . From the instant the sled was attached , radio signals would broadcast the whale's heart- beat back to a receiver aboard Dorado . A few minutes would be enough to ...
Page 64
... whale , an oar now served as a tiller . We were soon away , with Skipper Douglas , Sam Matthews , and " Captain Ephraim " man- ning the rescue skiff in the wake of Ballena . The tide had turned , and whales were every- where . As we ...
... whale , an oar now served as a tiller . We were soon away , with Skipper Douglas , Sam Matthews , and " Captain Ephraim " man- ning the rescue skiff in the wake of Ballena . The tide had turned , and whales were every- where . As we ...
Contents
PAGE | v |
Into the Heart of Africa The Weeks Expedition Collecting Birds | xviii |
Zoo Animals Go to School By Marion P McCrane 694 | xxiv |
Copyright | |
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