BY THE SAME AUTHOR 

 Mechanical Properties of Wood. 



viii -f- 167 pages, 6X9, 51 figures, 22 tables 

 Cloth, $2.50net. 



Copyright, 1912, 1919 

 By Samuel J. Record 



Stanbope jpress 



GILSON COMPANY 

 BOSTON, U.S.A. 



