462 



GENERAL OBSERVATIONS. 



16. Oxide of zinc 5-25 



17. Potash . 6 



18. Zirconia . 6 



19. Strontian . 6-5 



20. Protoxide of anti- 



mony . 6*5 



21. Protoxide of cerium 7*25 



22. Deutoxide of rhodi- 



um . 7*5 



23. Peroxide of cerium 7'75 



24. Oxide of palladium 8 



25. Protoxide of tin 8-25 



26. Peroxide of tin 9*25 



27- Barytes . 9-75 



28. Oxide of bismuth 10 



29. Peroxide of plati- 



num . 14 



30. Protoxide of lead 14 



31. Oxide of silver 14-75 



32. Protoxide of 26 



33. Peroxide of 27 



34. Protoxide of ura- 



nium . 27 



35. Peroxide of urani- 



um 28 



14 of these are whole numbers ; 8 end in 0-5, 

 10 in 0'5, and 3 in 0*75. Or, in other words, 



1 4 are multiples of an atom of oxygen, 

 8 are multiples of 4 atoms of hydrogen, 

 1 3 are multiples of 2 atoms of hydrogen. 



Ammonia being a compound of hydrogen, and 

 containing 3 atoms of it, is obviously only a 

 multiple of 1 atom of hydrogen. 



11, Thus it appears, that out of 117 bodies, 

 the atomic weights of which have been accu- 

 rately determined in this work, there are only 5 

 which are merely multiples of 1 atom of hydro- 

 gen, these are the four hydracids and ammonia. 

 The four acids contain each 1 atom of hydrogen, 

 and ammonia contains 3 atoms of hydrogen. 37 

 are multiples of 2 atoms of hydrogen, 11 of 

 which are acids and 11 bases. The rest simple 

 bodies. 



