620 



Specific Heat. 



No. 55 179 



55 179. 1 : 0. 



55 181. 1 : 15. 



55182. 1:14. 



55 183. 1:10. 



55.179. Calorimeter after Dulong and Petit, for the radiation method, Figure (.M. P., s - d - 

 III, Fig. 124 [II, 2, Fig. 201]; W. u. E. phys. Prakt,, Fig. 117), with niekelled radi- 

 ation vessel ;ind thermometer 1.1 2. 



55.180. Calorimeter after Weinhold, for high temperatures (M. P., Ill, Figs. H'7 and 128 



[II, -, Fi.u>. -<i:; and -01]), arranged for tipping hack, with iron bulb 4. 4. 



Calorimeters (Water Pyrometers) after Siemens and after Fiseher: see items Nos. 54,948 

 and 54,949, page 587. 



Cl. 1854, 1856, 

 1857. 3!>53. 



