500 SEC. 13. - CHEMISTRY. 



43. Thallium hexa-vanadate, T1 12 V 6 21 . 



44. Thallium octa-vanadate, T1 12 V 8 O 26 . 



45. Silver octa-vanadate, Ag 12 V 8 O 26 . 



46. Sodium octa-vanadate, Na 12 V 8 O 26 . 



47. Thallium deca-vauadate, T1 12 V 10 O 31 . 



48. Thallium dodeca-vanadate, T1 12 V 12 O 36 . 



49. Thallium tetra-kai-deca-vanadate, Tl 12 y i4 O 41 . 



50. Vanadium metal, V=51'3. 



51. Vanadium oxidibromide, VOBr 2 . 



52. VC1 4 decomposed into VC1 3 + C1. 



53. Vanadium oxitrichloride, VOC1 3 . 



54. VC1 4 undergoing decomposition. 



55. Vanadium dichloride, VC1 2 . 



56. Vanadium trichloride, VC1 3 . 



57. Vanadium pentoxide, V 2 O 5 . 



fi& reduction wit h SO, j* f 



62. 



63. VC1 4 I Obtained by throwing these 



64. VC1 3 f compounds into water. 



65. VC1 2 J 



243 la. 1; Calorimeter, by M. Berthelot, for thermo-chemical 

 investigations, with electric mover of the agitator. 



2. Air Thermometer, by M. Berthelot, glass, showing the 

 temperature up to 550 degrees. 



3. Air Thermometer, by M. Berthelot, silver, showing the 

 temperature up to 900 degrees. 



4. Apparatus for proving the disengagement of heat in the 

 reaction of two gases. 



5. Apparatus, by M. Berthelot, for the endothermic decomposi- 

 tion of formic acid by heat. 



6. Two sealed globes, for the synthesis of formic acid by direct 

 union of the oxide of carbon with potash, and sample of formate 

 of lead, obtained by synthesis. 



7. Apparatus, by M. Berthelot, for the synthesis of acetylene. 



8. Bell glass, curved, in which was effected the synthesis of 

 benzine, by the condensing of acetylene, by M. Berthelot ; also 

 another bell glass, empty. 



9. Alcohol, obtained synthetically, by the union of olefiant gas 

 with water. 



10. Sealed tubes, containing organic matter, hydrogenized by 

 iodhydric acid. Laboratory of the College of France. 



2432. Series of Cryohydrates. Frederick Guthrie, F.KS. 



These are solutions of various salts in water, of such strengths that, when 

 reduced below OC to the temperature marked on each flask, the salt and 



