172 TIMBER AND TIMBER TREES. [CHAP. 



TABLE LXXXIV. 

 Tensile Experiments. 



TABLE LXXXV. 

 Vertical Experiments on cubes of- 



Nos. 28 TO 36. Four more pieces each 2x2x2 inches tried under 

 the vertical pressure, took, on the average, 13-937 tons, or 3-484 tons to 

 the square inch, to crush them. Two pieces, each 3 x 3 the one 1 1 inches, 

 the other 1 6 inches in length bore 27* tons and 25-5 tons. Two other 

 pieces, each 4x4 inches the one being 8 inches, the other 13 inches in 

 length bore respectively 47 '75 tons and 38*5 tons; and one piece 

 12x12x15 inches in length bore 481 tons, or 3*34 tons per square inch 

 of base. 



E = 771030. S = 2247. 



