CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF THE MUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD COLLEGE, E. L. MARK, DIRECTOR, No. LXXIII.

STUDIES IN MORPHOGENESIS, VI.

A CONTRIBUTION TO THE QUANTITATIVE STUDY OF CORRELATED VARIATION AND THE COMPARATIVE

VARIABILITY OF THE SEXES.

BY C. B. DAVENPORT AND C. BULLARD.

Proceedings of the American Academy of Arts and Sciences.

CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF
THE MUSEUM OF COMPARATIVE ZOOLOGY AT HAR-
VARD COLLEGE, E. L. MARK, DIRECTOR, No. LXXIII.

STUDIES IN MORPHOGENESIS, VI.

A CONTRIBUTION TO THE QUANTITATIVE STUDY OF CORRE-
LATED VARIATION AND THE COMPARATIVE

VARIABILITY OF THE SEXES.

BY C. B. DAVENPORT AND C. BULLARD.