300 On the Daltonian Theory of [Oct. 



Weight of oxygen Ditto in the 



in the acid. base. 



3. Sulphate of soda 3 4 



4. Sulphate of ammonia 3 



5. Sulphate of magnesia S , 



6. Sulphate of lime 3 



7. Sulphate of barytes 3 



8. Sulphate of strontian 3 , 



9. Sulphate of alumina 3 , 



10. Subsulphate of alumina .... 3 



1 1 . Sulphate of y ttria 3 



12. Sulphate of glucina 3 



13. Sulphate of zirconia 3 



14. Supersulphate of copper .... 6 2 



15. Sulphate of copper 3 2 



16. Subsulphate of copper = 3 4 



17. Supersulphate of iron 6 2 



18. Sulphate of iron 3 2 



19- Subsulphate of iron 6 6 



20 Persupersulphate of iron .... 9 3 



21. Sulphate of lead 6 2 



22. Sulphate of zinc 3 1 



23. Sulphate of mercury 3 1 



24. Persulphate of mercury .... 3 .....2 



25. Sulphate of silver 3 1 



26. Sulphate of bismuth 3 1 



27. Sulphate of nickel 3 2 



28. Sulphate of cobalt 6 2 



29. Sulphate of manganese . .*. . 6 2 



30 Sulphate of uranium 3 3 



31. Persulphate of platinum .... 6 2 



By casting our eye over this table we find that the canon of 

 Berzelius holds in all the examples in the table except seven. 

 The first of these is sulphate of soda. I think it is pretty well 

 established that sulphuric acid is a compound of 1 atom of 

 sulphur and 3 atoms of oxygen. While all the experiments 

 hitherto made lead to the conclusion that soda is a compound 

 of 1 atom of sodium and 2 atoms of oxygen. Now if these con- 

 clusions be well founded, as I think they are, Berzelius's canon 

 could not hold with respect to sulphate of soda, unless it were a 

 compound of 2 integrant particles of sulphuric acid and 1 inte- 

 grant particle of soda, which is just the inverse of its real com- 

 position. Indeed, if the canon held good, it would follow as a 

 consequence that an integrant particle of sulphuric acid is in all 

 cases incapable of uniting to an integrant pai'ticle of a deutoxide. 

 This rule indeed seems to hold with respect to iron, lead, cobalt. 



