﻿W. 
  P. 
  White- 
  — 
  Silicate 
  Specific 
  Heats. 
  

  

  IT 
  

  

  Table 
  IV. 
  

  

  Interval 
  Specific 
  Heats. 
  

  

  Quartz 
  

  

  0°-L00° 
  

  

  0°-300° 
  

  

  6°-500° 
  

  

  0°-550° 
  

  

  0°-600 
  

  

  0°-700° 
  0° 
  

  

  -900 
  

  

  3°-1100° 
  

  

  •1875* 
  

  

  •2167* 
  

  

  • 
  2380* 
  

  

  •2439* 
  

  

  •2518 
  

  

  * 
  -2543 
  -2596 
  

  

  •2641 
  

  

  •1875* 
  

  

  69 
  

  

  84* 
  

  

  39* 
  

  

  20 
  

  

  * 
  

  

  43 
  

  

  96 
  

  

  40 
  

  

  63* 
  

  

  69 
  

  

  80 
  

  

  

  18 
  

  

  ¥r 
  

  

  

  95 
  

  

  

  65* 
  

  

  68 
  

  

  80 
  

  

  

  •2498$ 
  

  

  

  95 
  

  

  

  66 
  

  

  67f 
  

  

  ^2377) 
  

  

  

  •2501$ 
  

  

  

  95 
  

  

  

  70 
  

  

  

  80 
  

  

  

  

  

  

  97 
  

  

  

  69 
  

  

  

  79 
  

  

  

  

  

  

  96 
  

  

  

  66 
  

  

  

  79 
  

  

  

  

  

  

  

  

  70 
  

  

  

  '2376) 
  

  

  

  

  

  

  

  

  69 
  

  

  

  79 
  

  

  

  

  

  

  

  

  67 
  

  

  

  77$ 
  

  

  

  

  

  

  

  

  67 
  

  

  

  77$ 
  

  

  

  

  

  

  

  

  64f 
  

  

  

  

  

  

  

  

  

  

  69 
  

  

  

  

  

  

  

  

  

  

  69 
  

  

  

  

  

  

  

  

  

  

  

  

  Pseudo-Wollastonite. 
  

  

  

  

  

  0°-100° 
  o°- 
  

  

  300° 
  0°-500° 
  0°-700° 
  0°-900° 
  0°-1100° 
  C 
  

  

  -1160° 
  0°-1300° 
  

  

  0°-1400° 
  

  

  • 
  1844 
  -2045 
  -2170 
  -2258 
  -2324 
  -2379 
  

  

  2393 
  

  

  •2427 
  

  

  •2447 
  

  

  43 
  

  

  45 
  

  

  71 
  

  

  59 
  

  

  25 
  

  

  79 
  

  

  94 
  

  

  26 
  

  

  (2451) 
  

  

  

  45 
  

  

  

  

  24 
  

  

  79 
  

  

  

  26 
  

  

  49 
  

  

  

  44 
  

  

  

  

  

  78 
  

   78 
  

  

  

  25 
  

  

  47 
  

  

  

  0°-100° 
  

  

  0°-300° 
  

  

  0°-500° 
  

  

  0°-700° 
  

  

  0°-900° 
  

  

  0°-ll00° 
  

  

  0°-1300° 
  

  

  0°-1400° 
  

  

  Cristobalite 
  

  

  • 
  1882 
  

  

  •2334 
  

  

  •2426 
  

  

  •2508 
  

  

  •2569 
  

  

  •2625 
  

  

  •2663 
  

  

  •2680 
  

  

  

  83 
  

  

  33 
  

  

  25 
  

  

  09 
  

  

  68 
  

  

  25 
  

  

  61 
  

  

  80 
  

  

  

  83 
  

  

  

  

  

  

  

  

  

  Anorthite 
  

  

  ■1902 
  

  

  •2143 
  

  

  •2296 
  

  

  •2399 
  

  

  •2481 
  

  

  •2552 
  

  

  •2629 
  

  

  •2674 
  

  

  

  00 
  

  

  

  97 
  

  

  98 
  

  

  78f 
  

  

  (43) 
  

  

  28 
  

  

  74 
  

  

  

  02 
  

  

  

  

  

  

  50 
  

  

  

  

  Andesine 
  

  

  •1925 
  

   25 
  

  

  

  •2332 
  

   29 
  

  

  •2441 
  

   40 
  

  

  •2523 
  

   26 
  

  

  

  

  

  Albite 
  

  

  •1947* 
  

  

  •2203* 
  

  

  •2363* 
  

  

  •2474 
  

  

  •2561 
  

  

  •2630 
  

  

  

  

  

  49* 
  

  

  15* 
  

   196* 
  

  

  64* 
  

   63* 
  

  

  73 
  

  

  61 
  

  

  29 
  

  

  

  

  Microcline 
  

  

  •1872* 
  

  

  •2108 
  

  

  (2260) 
  

  

  •2371 
  

  

  •2450 
  

  

  (2512) 
  

  

  0°-1160° 
  

  

  0°-1250° 
  

  

  

  71* 
  

  

  07 
  

  

  (63) 
  

  

  70 
  

  

  51 
  

  

  (09) 
  

  

  

  

  

  70 
  

  

  08 
  

  

  

  

  

  

  

  

  

  70 
  

  

  

  

  

  

  

  

  

  Wollastonite 
  

  

  

  

  •2273 
  

  

  •2344 
  

  

  •2402 
  

  

  •2416 
  

  

  

  

  

  

  

  75 
  

  

  44 
  

  

  01 
  

  

  15 
  

  

  

  Diopside 
  

  

  •1924 
  

  

  •2163 
  

  

  •2314 
  

  

  •2421 
  

  

  •2500 
  

  

  •2563 
  

  

  

  •2603 
  

  

  

  

  (66) 
  

  

  14 
  

  

  20 
  

  

  00 
  

  

  62 
  

  

  

  04 
  

  

  

  

  64 
  

  

  

  

  

  

  

  

  Mag.-Sil. 
  

  

  •2034 
  

  

  •2297 
  

  

  •2462 
  

  

  •2576 
  

  

  •2662 
  

  

  •2730 
  

  

  

  

  Amphibole 
  

  

  33 
  

   31 
  

   33 
  

  

  99 
  

  

  60 
  

  

  76 
  

  

  60 
  

   61 
  

  

  32 
  

  

  

  

  Mag.-Sil. 
  

  

  •2039 
  

  

  •2309 
  

  

  •2485 
  

  

  

  

  

  

  

  Pyroxene 
  

  

  

  10 
  

  

  83 
  

  

  

  

  

  

  

  * 
  Preliminary 
  determination. 
  

  

  f 
  Determination 
  accompanied 
  by 
  some 
  mishap. 
  

  

  $ 
  Platinum 
  furnace. 
  

  

  Am. 
  Jour. 
  Sci.— 
  Fourth 
  Series, 
  Vol. 
  XLVII, 
  No. 
  277.— 
  January, 
  1919. 
  

   2 
  

  

  