1252 
9 4d. Atomic heat of solid nitrogen. 
In table I the results of the measurements concerning solid nitrogen 
bave been collected. 
TABLE. I. 
Atomic heat of solid nitrogen. 
= 5 5 » | Heat capacity | Heat capac. ome 
on Mean | #4 | Of nitrogen + | of flask and | nitro sen 
ot See 
& bo Es | joules degree K. 
Bye 5 degree K. | degree K. | Cp 
13 July I A030 |) 15 s2iTen |) 124380 20.63 32 | 1.60 
ICS ze » | 16.50 | 1.306 22.60 1.57 1.745 
13) 7 LIT 5 20.75 | 0.904 | 32.69 2.64 2.49 | 
se in Ol 42.1 20.78 | 0.875 33.29 2.65 2.43 
(Weight !/.) 
12) Le ORS NOSE ZI SAI 2.70 2.51 
| 22 June I 40.4 | PAVED 0.662 32.82 2.95 2.47 
12 July Il 42.1 | 39.16 | 0.316 67.6 121 4.41 
Hie Oe single 39.40 0.310 68.8 12.2 4.50 
22 Junell | 40.4 45.88 0.696 A3 16.5 4.74 
23.0ct. I |) 40:5 55.26 05722 86.1 23.6 5.16 
23 etal De 56.04 | 0.7315 86.5 24.15 Dal | 
27 Nov. II | 42.6 56.12 | Wd 88.4 24.1 | 5.05 
W2a pane atl 5, 56.85 0.691 90.9 24.7 5.195 | 
Zine IVa AS arom 61.32 0.631 96.7 27.75 5.27 | 
| 23 Oct. III | 40.5 | 61.68 | 0.668 | 94.3 28.0 5.48 | 
ae Ee ! EA Ln = —— En 
The results for C, are represented in fig. 4, together with those 
of § 5 concerning liquid nitrogen.) (See fig. 4 following page). 
In this figure have also been drawn the curves, which are obtained 
from Desiwer’s formula for C, with 4 == 90 and with = 100, with 
which the course of the atomie heat of solid nitrogen agrees in 
its main features. *) f 
A closer comparison with the theoretical formulae which have 
1) Our results are between 39 and 62° K. about 2°/, smaller than those of Eucken. 
2) Apparently the transformation of nitrogen (p. 1251 note 4) has not a great 
influence on the value of 6. 
