No. 53321. 



Thermal Conduction in Solids, Liquids and Gases. 



641 



* 1 



55 315. 1 : 6. 



55 316. 1 : 5. 



55 317. 1 : 7. 



5S318. 1 : 5. 



55 320. 1 : 5. 



55 321. 1 : 8. 



55,316. Tube with Heating Bulb for Thermal Conduction and Convection in liquids, after 

 Eebenstorff, Figure, for steam heating (Ztschr. f. d. phys. u. chem. U., 21, 1908, 



" 



p. 298) 



Two bushes made of thermoscopic paper are slipped on the glass tube. In the vertical position 

 the difference between conduction and convection of the liquid in the tube is shown. 



55,317. Apparatus for investigating the Thermal Conduction of Liquids, Figure, cylindrical 



glass vessel with steam capsule, on stand (W. D., Fig. 381 B [361 B]) 



55,318. Apparatus for thermal Conduction of Gases, after Grove, Figure (M. P., Ill, 



Fig. 469 [II, 2, Fig. 306]) 



55.319. 2 Glow Lamps after Grimsehl, one evacuated, the other filled with hydrogen, also 

 2 Chromothermoscope Screens, one backed with black paper and the other with tin- 

 foil, for showing variation in thermal conduction and convection (Grimsehl: Die elek- 

 trische Gliihlampe im Dienste des physikalischen Unterrichts, pp. 13 and 50) .... 



55.320. Apparatus for thermal Conduction of Gases, after Magnus, Figure (M. P., Ill, 

 Fig. 470 [II, 2, Fig. 307]) ........................... 



55.321. --idem, Figure, fitted up more completely ............... 



S. d. 



0. 6.0 



0. 14. 



0. 14. 



0. 15. 



1. 8.0 

 3. 0.0 



Cl. 3423, 4148, 6203, 1926, 

 1927, 192S. 41 



