No. 65178. 



Calorimeters. 



619 



55 177. 1 : 10. 



55 175. 1 = 9. 



55 176. 1 : 8. 



55.174. Mercury Calorimeter after Favre and Silbermann, Figure (M. P., Ill, Fig. 119 

 [II, 2, Fig. 197]), on polished oak stand; all metal parts of iron and heavily nickelled. 

 Glass bulb 130 mm diameter, embedded in insulating material; capillary in front of 

 a millimetre ssale 500 mm long; with two retorts but without mercury 



55.175. Calorimeter for Liquids after Wiedemann, Figure, consisting of a double-walled 

 heating vessel with iron cylinder for taking mercury; with steel cock and, underneath 

 same, a flat, hollow metal screen for holding off the heat rays; double-walled calori- 

 meter with lateral thermometer, fixed on a slider movable in the base of the apparatus 

 (Fr. phys. Techn., I, 2, Fig. 3074) 



55,176. Calorimeter for Liquids, 

 the mixing method . . . 



Figure, after Eegnault, for determining specific heat by 



55.177. Calorimeter for Liquids, after Kopp, Figure (W. u. E. phys. Prakt., Fig. 194) 



One filling vessel with wire holder, six glass vessels (long necked) for the liquids, one small 

 base for same for holding when weighing; one calorimeter vessel of brass with wood block and stirrer, 

 one iron mercury-vessel with wire triangle and glass stirrer, one double-walled sheathing vessel of 

 brass with cardboard lid, one stand with two holders and one ring, and one thermometer. 



55.178. Calorifere after Andrews, modified by Pfaundler, Figure (M. P., Ill, Fig. 118 

 [II, 2, Fig. 196]; W. u. E. phys. Prakt., Fig. 115) 



The bulb is 44 mm diameter and holds 606 g mercury; the space between the two marks m 

 and m' holds 6,8 g mercury. 



s. d. 



4. 0.0 



7. 0.0 



12.10.0 



2. 8.0 



0. 15. 



Cl. 1851, 1853, 

 1819, 4502. 



