Colour vision

Transcriber’s Note
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TYPES OF COLOUR VISION.
W. DE W. A., DEL.
W. GRIGGS, LITH.
COLOUR VISION
BEING
THE TYNDALL LECTURES DELIVERED IN 1894 AT THE ROYAL INSTITUTION
BY CAPT. W. de W. ABNEY, C.B., D.C.L., F.R.S., LATE ROYAL ENGINEERS
WITH COLOURED PLATE AND NUMEROUS DIAGRAMS
NEW YORK WILLIAM WOOD AND COMPANY