Prof. Regnault on the Specific Heat of some Simple Bodies. 119 



First specimen 

 Second specimen 

 Third specimen 

 Fourth specimen 



Mean 



0-1673 

 01762 

 01742 

 0-1787 

 0-1774 



Fused Silicon. 



M. St. -Claire Deville lent me a specimen of silicon which had 

 been fused in a strong furnace. It constituted a single bar, all 

 the parts of which were firmly welded together. There were, 

 however, some cavities, one of which was filled with a vitreous 

 matter very different from the rest of the mass, and which it was 

 impossible to detach. 



M . 



. 28^228 



28s r -228 



28^-228 



P • 



2^-027 



2^-027 



2^-027 



T . 



. . 97°-63 



97°-63 



97°-50 



& . 



. 20°-63 



20°-68 



21°-26 



Ad' . 



. l°-0647 



l°-0479 



1°0555 



A . 



. 466s r -69 



466^-69 



466^69 



C . 



. 0-1568 



0-1533 



0-1571 



Mean . 



0-1557 



A second specimen of fused silicon was lent to me by M. Caron ; 

 it consisted of a single globule, apparently quite homogeneous, 

 with a facette which was a perfect mirror. 



M 



. , 



lls r -620 



lle r -620 



T . 



. , 



99°-42 



99°-52 



6' 



, . 



10°-53 



12°-27 



AO' 



, # 



]°-4382 



l°-4436 



A 



. . 



112^-40 



112^-40 



C 





0-1611 



0-1648 





Mean 



• . . • 



0-1630 



M. Caron lent me recently a larger quantity of fused silicon 

 forming several reguli, and in which no foreign matter could be 

 detected. I obtained — 



M 



P 



T 



& 



A& 



A 



C 



Mean 



81^-67 



81^-67 



1^3287 



ls r -3287 



99°61 



99°-55 



22°-29 



20°-99 



2°-6069 



2° 625 7 



464^-48 



464s r -48 



01755 



01738 





01 747 



