BY THE SAME AUTHOR 



■ Mechanical Properties of Wood. 



viii + 1()7 pages, 6 X 'A 51 figures, 22 tables. 

 Cloth, $2.50net. 



Copyright, 1912, 1919 

 By Samuel J, Record 



79374« 



Printed in U. S. A. 



Stanhope ipress 



F. H.GILSON COMPANY 

 BOSTON, U.S.A. 



6D 



-29 





