No. 55 187. 



Calorimeters. 



631 



'55185. 1:8. 



55 187. 1 = 6. 



55.181. Apparatus after De la Eoche and Be"rard, Figure, for determining the Specific 

 Heat of Gases at Constant Pressure (M. P., Ill, Fig. 129 [II, 2, Fig. 205]) 



55.182. Gas Calorimeter after Be'gnault, for the same purpose, Figure (M. P., Ill, Figs. 130 

 and 131 [II, 2, Figs. 206/7]; Gan.-Kein., Fig. 433) 



55.183. Calorimeter after Eilhard Wiedemann, for determining the Specific Heat of Gases at 

 constant Pressure, Figure (Pogg. Ann. d. Phys. u. Chemie, Vol. 157, 1876, p. 1; 

 .M. P., Ill, Fig. 132 [II, 2, Fig. 208]) 



The illustration includes only the Heating Apparatus with Water Bath and the Calorimeter. 

 The following pertain to the complete apparatus: 1 flask with rubber ball, 1 water flask with tube and 

 lead pipe, 1 large glass flask. -2 manometers, thermometer screen with thermometer. The heating bath 

 has a stirring device, 1 thermometer and 1 burner; while the calorimeter vessel contains a measuring 

 vessel with three small silver cylinders, filled with silver turnings. 



Given in is one thermometer divided in Vio" C. 



55.184. Pendulum Clock with electric 1 / 4 -minute contact, for calorimetric work, mounted 

 open, at same time serving as model of a pendulum clock, see Fig. 52,428, p. 333 . 



Chronoscopes: see p. 248. 



.">.">. I S5. Apparatus after Clement and De"sonues, Figure, for determining the Specific Heat 

 of Gases at Constant Volume (M. P., Ill, Fig. 133 [II, 2, Fig. 209]), also for shewing the 

 temperature change on the expansion and contraction of gases (W. D., Fig. 416 [392]) 



s. d. 

 12. 0.0 



15. 0.0 



17.10.0 



3. 0.0 



1.16.0 



.">."). isii. Calorimeter after Brix, for determining Heat of Vaporisation, Figure (M. P., Ill, 



Fig. 371 [II, 2, Fig. 227]) 1. 10. 



55,187. Calorimeter after Schiff, for determining Heat of Vaporisation, Figure, with thermo- 

 meter, flask, stand, tripod, and wire netting (W. u. E., phys. Prakt., Fig. 124) ... 4. 0. 



Cl. 1858, 1859, 1860. 



