410 



Molecular Effects of Gaseous Bodies. 



No. 53129 



a 



53 131. 1 : 0. 



53132. 1:3. 



53 134. 1 : 5. 



53 136. 1:3. 



53 137. 1 : 4. 



Molecular Effects of Gaseous Bodies. 



53.129. Dobereiner's Tinder Box, Figure 



53.130. Air Gun, Figu re, ;i separate compression pump is not necessary 



53.131. Brick with Fitting, Figure, for Pettenkofer's Experiment to show the Diffusion 

 of Gases through porous walls (Kleiber, Oberstufe, Fig. 18; M. T. p. 129) 



53.132. Apparatus for showing the Diffusion of Gases through porous Partition Walls (Trans- 

 fusion), F i g u r e (M. P. Ill, Fig. 145 [I, Fig. 619]) 



53.133. -- idem, with Manometer (M. T., Fig. 92) 



53.134. Gas Endosmose Apparatus, after Weinhold, Figure (W. I). Fig. 188 [173]) . . 



51,751. Double Sphere on Stand, for showing the expansion of gases (\V. D. Fig. 60 [55]) and 

 The mixing (diffusion) of two -rases, after Berthollet (Gan.-Man., Fig. 163), see Fig. 51,751, 

 p. 250 



53.13<>. Demonstration Gas Indicator, Figure 



Mercury is introduced into the I"-tul)c until the lower current terminal is immersed therein. 

 The upper contact is inserted a,s per illustration, the two terminal* arc then connected witli a cell and 

 a bell, and house j^as is allowed to flow on to the diffusion partition. The fias diffuses in the funnel 

 and forces the mercury out of the left limb of the tube until I lie circuit is finally closed. 



.":;. i:{7. Gas Indicator after Ansel], Figure, for showing the presenee of firedamp . . . 



.">3. 138. -- idem, as suggested liy Bunsen, Figure 



53.139. Silver-Plated Copper Plate for Moser's breath figures (Fr. phys. Teolm. I. 2, p. 1031) 



53.140. Endosmometer alter Meelai, Figure 



( .|. 1012, 5880, 

 1015,1016, 



8. d. 



0. 7. 



1. 4. 



0. 12. (i 



0. 4. II 

 0. 4. II 

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0. 10. 



0. x. o 



1. 2. 



0. 12. 



0. 5. li 



1. 0. 



5115, 

 5854, 1017. 



