AUTHOR OF “ANIMAL INGENUITY OF TO-DAY,”
“INSECTS AND MAN,” &C., &C.
WITH 39 ILLUSTRATIONS & NUMEROUS DIAGRAMS
LONDON
SEELEY, SERVICE & CO. LIMITED
38 GREAT RUSSELL STREET
1921
UNIFORM WITH THIS VOLUME
THE LIBRARY OF ROMANCE
Extra Crown 8vo. With many illustrations. 6s. nett.
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