PROFESSOR TAIT ON IMPACT, II. 



397 



APPROXIMATE COEFFICIENTS OF RESTITUTION 



Successive Values of e (1 - m), calculated by the First Formula in the Paper. (The suffix to the number of the 

 experiment indicates the mass, and the height of the first fall is quoted.) 





7/4/91. 



Old V. I. 

 1219. 



R. 



I, 



Hi 



III 4 



iv 4 



•64 



•67 



•54 



•57 



•74 



•74 



•74 



•73 



•76 



•76 



•78 



•78- 



•77 



•78- 



•80 



•79 



•78 



•78 



•82 



•82 



•78 



•79 



■82- 



•82 + 



•78 l 



•79 



■83 



•82 



•79 



•79 



•83 



•81 



•78 



•80 



•82 



•83 



•77 









•79 









•78- 









12/6/91. New N. I. K. 



16/6/91. 



COKK. 





1219. 







I, II X 





Ill, 



iv 4 



46 -45 - 





•38" 



•33 



53 -53 





•49 



■44 



59 - -59 





•56 



•50 



60 -61 





•59 





•61 













750. 





I, 



II, 



III., 



IV., 



•82 



•82 



•84" 



•85- 



•83 



•82 



•86 



•86 



•84 



•85 



•87 



•87 



•83 



•82 



•87 



•87 



•82 



•82 



•87 



•87 



•82 



•82 



■86 



•87 



■81 



•82 



•86 



•87 



•82 



•81 



■86 



•87 + 



•81 



■81 



•86 



•87 + 



•81 



•81 



•85 



•86 



•79 



•79 



•85 



•86 



•79 



•80- 



•87 



■86 



•77 



80 + 



■85 



•85 



•80 



•85 



•84 



'87 



•74 



79 



•84 



•85 



•88 



83 



•84 



•85 



•82 





•84 



■84 







•84 



•83 







•84 



•82 







•89 



•84 







24/6/91 



COKK. 







2286. 





I, 



Hi 



Ill, IV 4 





•40 



•41 



•32 -31 + 





•49 



•49 



•46 -42 





•58 



•58 



•53 - -45 





•63 



•61 



•57 + 





•63 



•64 



•55 



22 



/6/91. 



New V. I. 



R. 



13/7/92 





914-4. 





1000 



I> 



Hi 



Ill, 



iv 4 



I, 



•71 



•71 



•74- 



•73 



•77 



•74 



■75 



•78 



•78 



•77 



■77 



•77 



•79 + 



•79 



•77 



■77 



■77 



•80 



•80 



•77 



•75 + 



•77 



•80 



•80 



•76 



•76 



•77 



•79 



•80 + 



•75 



•76 



76- 



•79 



■80 



•74 



•76 



•75 



•79 



•79 



•74 



•77 



•75- 



•79 



•78 



•70 



•76 + 



•77 



•79 



•77 



•68 



•74 



•75 + 



•78 

 •77 



•79 



•77 



•68 



3/7/91. Vulcanite. 



1219. 



II., 



•63 

 •55 

 •56 

 •69 

 •71 



2438. 

 III., 

 •47' 

 •56 

 •58 

 •67 

 ■67 + 



1219. 2438. 



IV 4 

 •49 

 •45 

 •50 

 •57 

 •59 



V 4 

 •33 

 •44 

 •49 



•58 







29/6/91. 



Plan 



E. 









6/7/91 



. Steel. 









1219. 





2438. 







1219. 





2438. 



1219. 



2438 



II 



Hi 



HI, 



IV X 



v 2 



vi 4 





Ii Hi 



HI 2 



IVx 



v., 



vi 4 



VII 4 



•42 



•43 



•40 



•41 



•32 



•23 





•45 -45 



•49 



•39 



•36 



•31 



•19 



•46 



•49 



•49 



•47 



•48 



•37 





•42 "45 



•49 



■39- 



•45 



•20 



•29 



•58 



•56 



•56- 



•52 



•51 



•43 





•53 -53 



■52 



■44 



•40 







•69 



•69 



•60 



•66 

 •68 



•56 



















7/11/91. 



V. I. B 











Gole Ball 



Wood Base. 











1066. 







26/5/9' 



[. UN] 



iAMMEHED. 





28/5/91. 



Hammeked. 



Flat Base. 



Ridged Base. 







1219 









1219. 





Ii 



Hi 



nil 



iv t 





h 



Hi 



Ill,, IV 4 





Ii 



"i 



III., 



iv 4 



•76 



— 



•72 



•74 





"50 



•52 



•47 "44 





•55 



•56 



•51" 



•48 



•77 



— 



•78 



•77 





'59 



•59 



•60 -59 





•63 



•62 



•64 



•60- 



•77 



•77 



•78 



•78 





'63 



•63 



•63 -63 





•65 



•65 



•67 



•64 



■77 



•77 



■78 



•78 





'65 



•66 



■67 -66 





•67 



•69- 



- -68 



•65 



•76 



■77 



•78 



•78- 





'66 



•68 



•69 - -66 





•67 



•69 



■70 



69 



•74 



•77 



•78 



•78 





•68 



•70- 



■69 '66 





•70 



■69- 



■71 



•69 



•75 



•76 



•78- 



•78- 





•66 



•70 



•70 





•69 



•67 



'71 



•68 



•75 



•76 



•77 



•75 





















•73 



•75 

























VOL. XXXVII. PART II. (NO. 18). 



3 M 



