273 
t D, (found) D, (found) et | D, + Ds (calc.) 
(trip.) — 38°,85 C. | 13,6902 a 13,6902 «13,6911 
oe | 13,5956 | a |_ 135956 | 13,5056 
50° 13,4733 Ee | 4134133 | 13,4736 
100° | 13,3524 | ia | 13,3524 | 13,3526 
150° 13,2327 | = | 13,2327 13,2327 
200° 13.1139 __(0,0001) | 13,1140 13,1138 
250° 12,9957 (00005) | 129962 \__ 12,9960 
300° 12,8778 (0,0014) | 12,8792 || 128792 
350° 12,7640 | (00034 «12,7674. «12,7635 
400° 12,65 (0,008) 12,66 12,66 
500° | 12,425 (0,025) 12,45 het OAS 
600° | 12,18 oost!) 122 | 12,24 
700° | 11,90 (0,13) 12,03 12,03 
800° 11,60 (0,23) 11,83 11,80 
900° be (0,36) 11,51 11,48 
1000° 10,55 0,55 | 11,10 11,12 
11009 | 9,90 | 080 | 1070), |) 10,69 
1200° ie 900 0 on 1015 10,15 
13000 | 7,80 bs! aes | 9,45 | 9,46 
1400° | 6,00 2,60 | 8,60 8,58 
14270 | @5)=D, | 415) =D, | (30) | 830 
values are in good concordance with each other; at 350° a small 
deviation begins to appear. At — 38°,85 the deviation is still exceed- 
ingly slight. The fictitious value D, at the absolute zero ({ == —273°,1 
is found = 14,2804 = 14,28 (if the mercury were still liquid then). 
For temperatures above 350° C. another term must be added to 
the above formula. As this formula yields somewhat too small values . 
from 400° to about 835°, and on the other hand to an ever increas- 
ing degree too large values above 835°, the term 
4 bes Nn als 
16,4.10—6 (zo) 8,35 a 100 6 tae Shoe sees is : (6) 
