342 White — Specific Heats of Silicates and Plat 



mum. 



Table I. 



Mean Specific Heats from Zero, of Platinum, Pseudo-wollastonite, 



Wollastonite, Orthoclase, Diopside, Quartz, Orfchoclase 



Glass, and a Soft Tubing Glass. 



Upper 

 Temperature 



Pt. 



P- 



Woll. 



Woll. 



Or. 



Di. 



Qu. 



Or. 



Glass 



Soft 

 Glass 



100° 



500 



700 



800 



900 



1100 



1300 



1500.. 



•03348 

 •03355 



•03423 



•03428 



•03515 

 •03514 



•03573 



•03578 



•03640 

 •03647 



•03675 

 •03682 



•2159 

 •2169 



•2380 

 •2380 

 •2375 



•2422 

 •2416 



•1833 

 •1833 



[•2180] 

 •2169 

 '2168 



•2286 

 •2289 



•2354 

 •2355 



[•2423] 

 •2404 

 •2404 

 •2403 



•2248 

 •2246 



•2401 

 •2402 



•2505 

 •2513 



•1919 

 •1905 

 •1920 

 •2310 



•2308 



•2420 

 •2422 



•2499 



•2488 

 •2483 



•2562 

 •2564 



[.2613] 

 •2596 

 •2601 



•1840 

 •1851 



•2~3~7~2 



•2368 



[•2547J* 

 •2559 * 

 •2556 * 



•2597 * 

 •2594 * 



•2643 * 

 •2646 * 



•2291 

 •2304 



•2465 

 •2473 



•2588 

 •2591 



•1977 



•1974 



•24000 

 •24077 

 •2413 f 

 •2410 f 

 •2646 

 •2639 



•2791 

 •2796 



•2907 

 •2909 



•2945 

 •2949 

 •2972 

 [•2996] 

 •2999 

 •2998 

 •3024 



* Affected bv the inversion at 575°. 



f Heated by lead bath. 



Table II. 



True Specific Heats of the Substances given in the preceding Table, 

 except Quartz. 



Temperature 



Pt. 



Woll. 



P. Woll. 



Or. 



Di. 



Or. 



Glass 



Soft 

 Glass 



500 



700 



800 



900 



1100... 



1300 



1500 



•0356 



•0368 



■0380 

 •0390 

 •0400 

 •0407 



•251 

 •263 



•262 

 •261 



•250 



•259 

 •257 



•257 

 •272 

 : 279 



•262 



•272 



: 2~8~f 



•286 



•278 



•264 



•282 

 •297 



.298 

 •324 



•340 

 •335 

 •333 

 •332 



