Columba Schimperi, i. 184.
Columba torquatrix, ii. [350].
Columba turricola, i. 184.
Columbia, cattle of, i. 88.
Columbine, double, i. 365, ii. [330].
Columbus, on West Indian dogs, i. 23.
Columella, on Italian shepherd's dogs, i. 23;
on domestic fowls, i. 231, 247, ii. [202], [429];
on the keeping of ducks, i. 277;
on the selection of seed-corn, i. 318;