Peirce. - Damping of Oscillations 



Plate 3. 



w w»m m NMMWKil{!li\ 



.■iiiiiiillHlllllli! 



Hllll 









ill 



ill! 





"■"•"—.,.. 



II 



'"ililj 



Figure 6. 



>., t 







■■ 



■■. 







„„„ !n jijjiiijii 



.fill 











"Hlllllll, 







Figure 7. 

 Proc. Amer. Acad. Arts and Sciences. Vol. XLIV. 



