440 Mr. Scrymgeour's Experiments to determine the Influence 



use of such a spring, though very slender, instead of a knife- 

 edge. 



Set, No. 1 6. — With knife-edge and round bob of 8 pounds, 

 the impulse being given in the middle. 



Tr™~,.; m o„fo Gain in Extent of 



Experiments. 2 4 Hours. Vibration. 



In air + 0*5 S 2-26° 



Ditto 4-0-1 2*26 



In exhaustion, 6| in. +0*1 2-84 



Ditto 16| . . . +0-7 . . 2-50 



In air +0*4 2*26 



Ditto . . . +0*4 



Set, No. 17. — With knife-edge, and a greater maintaining 

 power. 



— !■■' ,-*i':*. \... Gain in Extent of 



Experiments. 24 Hours. Vibration. 



In air — 4-2 s 2-65° 



In exhaustion, 6J in. — 4*4 3*35 



Ditto \5%. . . — 3-6 3-00 



In air — 4-0 2-65 



Ditto ........ — 4*0 2-65 



Set, No. 18. — With an oval bob of 8 pounds weight. 



T?™«..;™«„fo Gain m Extent of 



Experiments. 24 Hours. Vibration. 



In air + 3*2 S ....... 2-55° 



Ditto 4-3-6 2-55 



Ditto 4-3-5 2-55 



In exhaustion, 6| in. 4-3*7 3-00 



Ditto 16J . . . 4-4-3 2-80 



In air 4-3*8 2*60 



Set, No. 19. — With an oval pendulum 12£ pounds in weight, 

 and the same maintaining power as above : — 



Extent of vibration, 2°-l. 



Set, No. 20. — With an increased maintaining power. 



•c> vna „: man4 . B Gain in Extent of 



Experiments. 24 Hours. Vibration. 



In air 4- 2-8 s 2*75° 



Ditto 4-2-1 2-75 



In exhaustion, 6 \ in. 4- 2-4 ,3*10 



Ditto 16J . . 4-2-7 3*00 



In air 4-2-8 2*75 



Ditto 4-2-2 2-75 



