X.i. :.2856. 



Effects of Air-pressure. Volumnometers. Syphons. Heron's Ball. 



381 



52849. 1:6. 52852. 1:5. 



52838. 1:6. 



52840. 1:6. 



52837. 



52856. 1:4. 



s. d. 



52.839. Connecting Syphon (M. T., Fig. 88) ...................... 0. 2. 



52.840. Plunging Syphon, of glass, Figure ..................... 0. 0. 6 



52, 841. Pipette (Luhme's), with gutta-percha slab . .................. 0. 0. 9 



52.842. Syphon for poisons, of glass, with stopcock, Figure ............. 0. 3. 



52.843. - - i d e m, without stopcock ......................... 0. 2. 



52.844. Poison Syphon for easily flowing liquids, for use by blowing (W. D., Fig. 149) . . 0. 3. 



52.845. Equal-limb Syphon (W. D., Fig. 151 [138]) .................. 0. 3. 



52.846. Syphon (Weinhold's) (W. D., Fig. 152 [139]), with constricted tube ....... 0. 2. 



52.847. Discontinous Syphon (W. D., Fig. 164) .................... I 0. 5. 



52.848. Syphon Apparatus, after Schulze (Fr. phys. Techn. I, 2, Fig. 2561) ....... 2. 0. 



52.849. Circulating Syphon, Figure (M. P., I, Fig. 530) ............... 0. 9. 



52.850. Apparatus for showing the circulation of the blood, 35 cm ........... 0. 10. 



52.851. -- idem, larger, 75 cm ........................... 1. 5. 



52.852. Heron's Ball, simple, with glass cock, Figure ................ 0. 3. 



52.853. Small Heron's Ball, with brass cock, Figure ................ 0. 5. 



52.854. Heron's Ball, screwed, with stopcock ..................... 0. 12. 



52.855. i d e m, with rubber bellows ....................... 0. 16. 



52.856. Heron's Ball with Force Pump, Figure, constructed entirely of brass and glass; 

 height: 30 cm ................................. 2. 0. 



Cl. 899, 4862, 904, 3350, 

 901,902,900,903,905. 



