XX.] 



INDIAN TEAK. 



121 



test the deflections of Teak under given weights at 

 various distances, viz. : 



TABLE XLIV. 



Nos. i to 6. 



This piece, tried the other way, viz.: 



The specific gravity of these pieces was respectively 

 '586 and "631 ; a proof that they were thoroughly 

 seasoned. Upon the laws which govern these deflections, 

 I offer no opinion, and the experiments are merely 

 introduced here to show how near the results go to 

 confirm Professor Barlow's theory that the strength varies 

 as the cubes of the length. 



There is one other species of trial which it may be 

 well to mention, namely, that to ascertain the elongation 



