f J ^ . h! ' . 
QUALITIES AND USES OF THE WOODS OF OHIO. 
By William R. Lazenby, For. Eng. 
INTRODUCTION. 
For some years it has been the duty of the writer to teach the 
subject of wood technology. The observations and tests recorded 
in this paper are a part of the studies undertaken in preparing for 
this instruction. Comparatively little has been published regarding 
the structure and physical properties of wood, and many wood users, 
as well as students of trees, have felt the need of more knowledge 
along this line. The woods used in the tests reported come from 
Ohio trees, and it was the aim to secure as far as possible average 
samples. 
Many publications that treat of wood are too technical for the 
average reader. This I have sought to correct by avoiding the use 
of terms unfamiliar to the general public. I trust that these notes 
Fig. 1. Western Catalpa grown as a roadside tree, about 25 years old. “Useful for 
living fence posts and poles, also for supports for telephone wires. Planted 
close so that thinnings can be made when the trees are large enough.” 
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