[WHEELER] 
THERMAL EXPANSION OF ROCK 
31 











Results of Second Results of Third Results of Fourth 
Heating. Heating. Heating. 
Tempera- Total Ex- | Tempera-| Total Ex- | Tempera- | Total Ex- 
ture. pansion. ture. pansion. ture. pansion. 
19. 5°C. 1.379 mm. 25°C. 1.650 mm. | 19°C. 1.917 mm. 
115.5(?) 1.518 150 1.762 116 2.002 
246 1.662 253.5 1.897 258 DAT 
306.5 1.820 374 2.071 371 2.332 
382.5 1.960 504 2.293 515.5 2.539 
506.5 2.122 609.5 2.545 609.5 2.738 
584.5 2.335 726 2.822 734 2.960 
cul’ 2.729 816 2.928 812.5 3.129 
802 2.845 911.5 3.023 869 3.188 
953.5 3.080 995 3.177 443.5 2.504 
1026.5 3.340 1053 3.316 364.5 2.389 
942 3.120 905 3.085 Tél 2.030 
868 3.004 756 2 SO A DO bales aaa VUE SET, 
771 2.905 655 TO OMAN NE ARMOR se |e eee ened 
671 2.810 328 D LS SU ANSE SET AA AE AO DER Hikes 
590 2.577 244.5 DC ODS MID PES RS Mer ae alert 
20 (approx.) 1.650 205 DRE DANS STRICT ER er eee 
Cuers 126.5 1.969 AA | ey A A ae 
7 Edt cr CGH RRS SOR EL Cn eee 19.4 1.910 yc eA IEP AE D VAR 
Results of Fifth Heating. Results of Sixth Heating. 
Total Ex- Total Ex- 
Temperature. pansion. Temperature. pansion. 
(Fis Op 2.030 mm. 18°C. 2.103 mm. 
218 2.176 149 2.222 
375.5 2.408 310 2.436 
523 2.627 461 2.651 
635 2.894 551.5 2.783 
736.5 3.131 694 3.143 
835.5 3.247 759.5 3.221 
952.5 3.404 861 3.333 
978 3.444 1004 3.542 
793 3.155 864 3.314 
649 2.991 764.5 3.190 
419 2.536 585.5 2.886 
384 2.482 19 2.175 
19 2.087 









For a graphical representation of the results recorded in the above 
tables see Figure IV. 
indicate points taken after cooling.) 
(In Figure IV., as also in Figure V., the crosses 
