6 NOTE ON BABUL. 



Durability. 



The heart-wood is hard and very durable ; if well seasoned, it is : 

 tough and somewhat difficult to work. It is said to be not readily 

 attacked by insects ; whereas the sap-wood is soft, is readily attacked 

 by insects, and decays rapidly. 



Weight. 

 The average weight of the timber is 54 Ibs. per cubic foot. 



Strength. 



The value of P., which represents the strength of a bar of timber, 

 calculated from the length between supports, breadth, and thickness 

 of the bar, and the weight in pounds, which, when placed in the middle 

 of the bar, causes it to break, is from 875 (Cunningham) to 884 (Skinner). 

 As the same coefficient for teak is 600, for Sal 790, and for Shisham 796, 

 it will be realized what a very strong wood Babul is. 



Fissibility. 



No experiments, as regards the fissibility 

 yet been made. 



of Babul timber, have 



Calorific Power. 



The following table gives the calorific value of Babul charcoal and 

 fuel : 



Seasoning Power. 



The timber seasons well without much warping or splitting. Various- 

 methods of seasoning, such as immersing in water and burying in the- 



