246 



DE. A. MATTHIESSEN ON THE EXPANSION 

 Table XII. 



The bucket used in Series I., II., and III. was the same. Its weight in vacuo was 

 =1-2523 grm., and it lost in water at ll°-2, 0-4989 grm. 



The bucket used in Series IV. and V. was the same. Its weight in vacuo was= 1-750 

 grm., and it lost in water at 8°-6, 0-4725 grm. 



Deducing from these determinations the volumes at 0°, we find that of the first to 

 be =0-49895 cub. centim., and that of second to be =0-47245 cub. centim. 



The formula therefore for the correction of the expansion of the first bucket used was 



and that for the second 



V,=0-49895(l+0-00002566.0, 

 V,=0-47245(l +0-00002566.^). 



