THE 

 LONDON, EDINBURGH and DUBLIN 



PHILOSOPHICAL MAGAZINE 



AND 



JOURNAL OF SCIENCE. 



[FOURTH SERIES.] 



MAY 1853. 



L. On the Relations between the Atomic Weights of analogous 

 Elements. By J. H. Gladstone, Ph.D.^ 



CHEMISTS who have turned their attention to the series 

 of numbers representing the atomic weights of the ele- 

 mentary bodies, have frequently remarked curious relations 

 between them. It is between similar elements that these nume- 

 rical relations occur ; and to such an extent is this the case, that 

 Berzelius, after mentioning numerous instances, says, " We see 

 that bodies which present the same properties up to a certain 

 point have certain relations between their atomic weights f." 



To illustrate this statement, to show the extent of its truth, 

 and to draw certain analogical inferences tending to the proper 

 understanding of such a fact, are the objects of this communi- 

 cation. 



The following is a list of the atomic weights arranged from 

 the lowest to the highest, and thus without any reference to 

 chemical relationship. The numbers adopted are those given in 

 the last volume of Liebig^s Jahresbericht. 



* Communicated by the Author, 

 t Traits de Chimie, vol. iv. 



Phil. Mag. S. 4. Vol. 5. No. 33. May 1853. 



