Quercus alba (white oak): cross section through one entire growth ring and portions of two others. Note large pores in early wood filled with tyloses and abruptly diminishing in size toward late wood. Small pores thin-walled and in ian-like groups. Note "dipping in" of the outline of the growth ring where it crosses the large ray at the right. X 35.

OF THE

Economic Woods of the

United States

Including a discussion of the
Structural and Physical
Properties of Wood

BY

Samuel J. Record, M.A., M.F.
Professor of Forest Products, Yale University

SECOND EDITION
REVISED AND ENLARGED

NEW YORK

JOHN WILEY & SONS, INC.

LONDON: CHAPMAN & HALL, LIMITED