HISTORY OF THE ATOMIC THEORY. 1 5? 



He gave also two tables of his famous double elective 

 attraction, or compound attraction. The examples given are 

 numerous, and would take too much room. The form is 

 exactly the same as given below as Elliot's, no numbers 

 being used. 



Elliot published Bergman's tables, with the addition of 

 figures, to show the relative force which one bore to another. 

 He says, " suppose that (see Encycl. Method. Diet, de 

 Chymie, vol. i., p. 552) potash and sulphuric acid attract each 

 other with the force of 9 ; that oxide of silver and nitric acid 

 attract each other with the force of 2 ; that the affinity of nitric 

 acid, with potash, is 8, and that of sulphuric acid, with oxide 

 of silver, 4. As 8 -f 4 is greater than 9 + 2, decomposition 

 takes place, and two new compounds are formed, nitrate of 

 potash and sulphate of silver." 



He then made the symbols so : — 



Nitre of Potash 



(Potash 8 Nitric Acid 



Q 9 f Nitre 



of Potash) ^ ^ (of Silver 



I 



Vitriolic Acid 4 Calx of Silver 



Vitriol of Silver 



G. Morveau continued this schema or symboles, finding 

 new numbers, and he has put into a short table his results. 

 This is a more definite way of showing the relation of bodies 

 to each other than wc have yet seen. 



