38 



THE NEW KNOWLEDGE. 



have one. But will they fit into such a position? Indeed 

 they will; their atomic weights thrust them naturally and 

 inevitably into that very place, thus: 



The law, therefore, which seemed at first assailed, was 

 amply capable of taking care of itself, and the new and in- 

 teresting family in the commonwealth of the elements finds a 

 fitting home in the Zero Group of Mcndeleeff's latest table 

 (Fig. 5). 



As an extra-conclusive and final test of the law, look at 

 the space in Group 2, Series 12, in this same figure (Fig. 5). 

 Wonderful as that element is, and much as we shall have to 

 speak of it in succeeding pages, its atomic weight leads it 

 inevitably into its proper place in this system of the ele- 

 ments, directly under barium, of which in its chemical 

 properties it is a sister. 



