216 EXPERIMENTS ON THE STRENGTH 



I regret that the Notes furnished with the Specimens were, in most 

 cases, insufficient to enable me to describe at large the qualities of the 

 several kinds of Timber, or the purposes to which they are applied in 

 the countries where they flourish : the native names too, are, in many 

 instances, of doubtful orthography, resting upon the vague pronunciation of 

 the people of the spot, and taken down by mere sound of ear. In most 

 instances, however, with the kind assistance of the Revd. Dr. Carey, and 

 Mr. Potter, for the Woods of Bengal and the East, and of Drs. Royle 

 and Falconer, for those of Upper India, I have been able to assign the 

 Botanical names of the trees. 



The numbers in the first column refer to the Specimens lodged with 

 the Society. The results given are the means of about four experiments 

 on each kind of wood. The term C, or direct cohesive strength in lbs. 

 avoirdupois in the square inch, in the last column, is experimentally 

 found by tearing asunder about an equal number of specimens, turned 

 according to the method described in Barlow's Treatise on the " Strength 

 and Stress of Materials." 



The Specimens, except when otherwise stated, were six feet long, 

 two inches square : the distance of the supports five and a half feet. 



Calcutta, 

 November 1, 1832. 



