514 THE STRENGTH 



Weights rieflectlons In Refurnerl to. 



In lbs. parts of an inch- (weights talteu off.) 



19600 - - - - .35 - - - - + 

 „ 35 03 



20608 - - - - „ - - - - .04 

 21616 - - - - .37 - - - - .04 

 22624 40 04 



23632 - - - - .42 - - - - ,05 



24640 - - - - .47 - - - - .06 



25648 - - - - .48 



26656 50 10 



27664 54 



28672 - - - - .55 



29680 - - - - .58 - - - - IS 



30184 - - - - .64 



30688 - - - - .65 



31192 - - - - .70 .15 



31696 - - - - .76 



32200 lbs. = 1 4 tons 7| cwt. With this it 

 broke in about half-a-minute, a wedge separating 

 from it as before. The length of the wedge was 

 18 inches, and its depth 6.15 inches. This 

 wedge was of the same form as that in experi- 

 ment 28, but not quite as well defined; 

 approaching to the form of that in experi- 

 ment 19. 



61. The beam had twisted a little, by the 

 last two or three weights, in a serpentine 

 manner through its whole length ; which shews 

 that in so deep and thin a beam, the top rib 



