The National Geographic Magazine, Volume 110National Geographic Society, 1957 - Geography Indexes kept up to date with supplements. |
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Page 49
... heart by actual inspection and not by other people's books , " wrote Dr. William Harvey in 1628 , " I found it so truly difficult that I almost believed with Fracastorius , * that the motion of the heart was to be under- stood by God ...
... heart by actual inspection and not by other people's books , " wrote Dr. William Harvey in 1628 , " I found it so truly difficult that I almost believed with Fracastorius , * that the motion of the heart was to be under- stood by God ...
Page 52
... heart are cut , there still will be regular electrical impulses generated . The rate , speed , and time intervals of these im- pulses tell much about the heart's health . The electrocardiograph , which records such data , is an ...
... heart are cut , there still will be regular electrical impulses generated . The rate , speed , and time intervals of these im- pulses tell much about the heart's health . The electrocardiograph , which records such data , is an ...
Page 53
... Heart Seagoing electrocardiographs , which turn tiny heart currents into wavy graphs , were Dr. White's hope for recording a whale's heartbeat . Here James L. Jenks , Jr. , president of the Sanborn Company , another spon- sor of the ...
... Heart Seagoing electrocardiographs , which turn tiny heart currents into wavy graphs , were Dr. White's hope for recording a whale's heartbeat . Here James L. Jenks , Jr. , president of the Sanborn Company , another spon- sor of the ...
Contents
Into the Heart of Africa The Weeks Expedition Collecting Birds | xviii |
KITIMAT Canadas Aluminum Titan By David S Boyer With 10 color illustrations 376 | xxv |
Amiable Rogue in a Black Mask Tough Curious and Unawed by Man | xxxii |
Copyright | |
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