40 James Mann : 



Area. Bk. \vt. Bk. \vt. sq. in. 



(a) - 20 - 2.85 - 2.85 - 8.12 - 36300 - 4470 

 Fibres commenced to crush, then specimen be-jj^an to lend 



until it sheared suddenly. 



(b) - 20 - 2.85 - 2.85 - 8.12 - 39400 ^ 4850 

 First bent considerably as long column, fibres crushed and 



tension side fractured. 



(c) - 20 - 2.85 - 2.85 - 8.12 - 36200 - 4410 

 Fibres first commenced to turn over, then sheared obliquely 



as in a., but shorter. 



(d) - 20 - 2.85 - 2.85 - 8.12 - 44000 - 5450 



Fibres crushed, then bent as longp ooUicru 



Ilimo. 



(«) - 20 - 3 - 3 - 9 - 30700 - 3410 



Fibres crushed, then broke as long- column at right angles 



to the annual rings. 



(b) - 20 - 2.85 - 2.85 - 8.12 - 27000 • 3320 



(c) - 20 - 2.85 - 2.85 - 8.12 - 3100O - 3820 

 (cl) - 20 - 2.85 - 2.85 - 8.12 - 32200 - 3960 



In the last three, the fibres crushed at end in direction of 



rings. 



Details of Tension Tests. 



All the ten.sioii specimens were 0.76 inch, diani, the area beingj 

 0.4536 sq. inches. 



No. B. \vt. B.wt. sq. in. Remarks. 



{a) - 9720 - 21430 - Obliquefracture,partial shear, brittle 



(d) - 5000 - 11020 - General fracture, rather brittle 



(c) - 7600 - 16750 - Long scarf fracture 



(d) - 6260 - 13800 - Long .scarf fracture 



{a) - 4380 - 9650 - Fairly general fracture, inclined to 



(d) - 5170 - 11400 - Brittle fracture [brittleness 



(c) - 5180 - 11420 - Long scarf fracture, partial shear. 



(^) - 4860 - 10710 - Fairly fibrous fracture, partial shear 



