ARTICLES 263 



the electrical relationship of the three atoms of potassium to 

 the nucleus and the nature of the chemical forces which deter- 

 mine the inclusion of molecules of water in the crystals. 



In this, as in many other instances, Werner has replaced 

 vague and misleading ideas by clear and definite ones ; he has 

 also opened up a new field of enquiry which seems likely to lead 

 to a knowledge of the constitution of inorganic compounds 

 comparable with our present-day knowledge of organic struc- 

 ture. 



