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Page 6 · column 2 of 8 · from the scan, no model involved
CIRCULAR TIME''— One OP *ME EARLIEST systems or . MEASURING TIME WAS THE TREE, CMCUE ANO SHADOW METHOD. CONCENTRIC CIRCLES DRAWN AROUND THE SAGE OF THE TREE WOULD I A ENABLE THE PRiM/TJVfi MAN y TO JUDGE THE TIME 8V THE SiTEHT OF the s^atow'
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