276 EXPERIMENTS ON THE STRENGTH OF WOODS. 



130 feet long, squaring 3 feet at the butt. It is easy to saw and 

 work up, used for all building purposes, but not capable of endur- 

 ing exposure or moisture for a long period. Planks 20 feet by 1 

 foot by 4 inches are worth a dollar — 16 feet by 11 inches by 1£ 

 inch about a quarter of a dollar each at Singapore. Masts 90 

 feet long and 1\ feet in diameter may be procured for forty 

 dollars. 



