Science Today: A Layman's Handbook of Recent DiscoveriesWatson Davis |
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... MAYA CIVILIZATION by Dr. Sylvanus G. Morley XXXVI . THE PAST AS LIVING by Dr. John C. Merriam XXXVII . OUR FUTURE POPULATION by Dr. Warren S. Thompson 221 228 234 239 XXXVIII . HEREDITY AND ENVIRONMENT by Dr. Albert F. Blakeslee 245 ...
... MAYA CIVILIZATION by Dr. Sylvanus G. Morley XXXVI . THE PAST AS LIVING by Dr. John C. Merriam XXXVII . OUR FUTURE POPULATION by Dr. Warren S. Thompson 221 228 234 239 XXXVIII . HEREDITY AND ENVIRONMENT by Dr. Albert F. Blakeslee 245 ...
Page 229
... Maya civilization are found at the ruins of Uaxactun in northern Guatemala , which ancient city has been under intensive study by the Carnegie Institution of Washington for the past seven years . During this period discoveries of ...
... Maya civilization are found at the ruins of Uaxactun in northern Guatemala , which ancient city has been under intensive study by the Carnegie Institution of Washington for the past seven years . During this period discoveries of ...
Page 232
... of the Christian era - certainly not later than the eighth century - the system of agriculture employed by the Maya of the Old Empire began to fail , another manifestation of the age - old complaint - the 232 THE MAYA CIVILIZATION.
... of the Christian era - certainly not later than the eighth century - the system of agriculture employed by the Maya of the Old Empire began to fail , another manifestation of the age - old complaint - the 232 THE MAYA CIVILIZATION.
Contents
THE SUN by Dr C G Abbot | 3 |
CHASING AN ECLIPSE TO THE SOUTH SEAS by Prof | 14 |
A FUTURE JOURNEY TO THE MOON by Prof John | 25 |
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able activity America animals appear atmosphere aviator become building Bureau called canyon carried cause cell changes charts coast continue direction early Earth effect electric energy environment experience fact feet fires flower force forest germs give given Gurwitsch half hour hundred hunger hurricane important increase Indian insects interesting island kinds known land less light living magnetic matter means mental meteors methods miles Moon mountain national parks nature night northern notes observations operation origin pass past period plants possible practically present probably produced question race radio rays recent region scientific seen solar South species storm surface things thousands tion trees United waves weather winds winter