58 



SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 62 



V 35 



t 7-2,'^ 



k 024 ? 



Aq 001 



A,( 0014 



Am 022 ? 



5 /O /5 ^o ;S.5 -30 J5 ^^ 

 Fig. 16. — Curves of damping coefficient for rolling. 



