358 Mr. J. Joly. 



Aluminium* — Pure, cast. 



w. 







no. 



Sp. h. 



Other observers. 



5 '376 



16 -62 

 16 30 



15- 78 



16- 16 

 16 -42 

 16-42 



100-18 

 100-18 

 100 -18 

 100 -18 

 100 -18 

 100-18 



-1880 

 -1862 

 0-1897 

 -1887 

 -1877 

 -1877 



-2247 

 0-2215 

 -2242 

 -2243 

 -2236 

 0-2236 





Mean .... 



16° 



100° 





0-2236 





Silver* — Pare, rolled. 



W. 







w. 



Sp. h. 



Other observers. 



4-027 .... 

 .... 

 „ • .... 



12-96 



10- 72 



11- 44 



99-74 

 99-35 

 99-28 



-0380 

 -0380 

 0-0375 



0-0583 

 0-0571 

 0-0569 



Eegnault 0*05701 



Mean .... 



12° 



99° 





-0574 





Platinum. — Rolled. Purity uncertain. 



w. 





t 2 . 



w. 



Sp. h. 



Other observers. 



34-764 .... 



13-10 



13- 20 



14- 36 

 14-04 



13- 68 

 12-80 



14- 16 



99-63 

 99-63 

 99-52 

 99-54 

 99-60 

 99-75 

 99-82 



0-182 

 0-183 

 0-186 

 0-183 

 0-183 

 0-185 

 0-182 



-0326 

 -0327 

 -0331 

 0330 

 0-0328 

 -0328 

 0328 



0° to 100°. 



Mean. . . . 



14° 



100° 





-0328 





Lead. — Pure, cast. 



W. 



K 



4 



w. 



Sp. h. 



Other observers. 



89-508 .... 

 » i • • • 



16-70 

 16 34 



99-85 

 100 -04 



0-428 

 0-431 



-03091 

 -03093 



0-0314 



Mean. . . . 



16° 



100° 





03092 





* Eeceived from Professor Keynolds. 



