TO

niin GRA

THE DUKE OF ARGYLL, K.T., F.R.S., &c..

IN TESTIMONY OF

APPRECIATION OF HIS LIFE-LONG INTEREST IN ORNITHOLOGY, AND WITH A DEEP SENSE OF THE
VALUE, IN THE ADVANCEMENT OF OTHER SCIENCES, OF THE ORIGINAL
RESEARCHES TO WHICH HE HAS DEVOTED THE
PORTION OF TIME WHICH COULD BE SPARED FROM THE DISCHARGE OF IMPORTANT

PUBLIC DUTIES,

Ze

Chis Second Evition of

A MONOGRAPH OF THE TROGONID AS,

OR FAMILY OF TROGONS,

IS DEDICATED,

BY

THE AU TEOR