Wenzel. 217 



affinity on a good foundation, and the circumstances under 

 which the bodies combine as well as the true relation of 

 their weights towards each other." 



' Page 4. " It is of itself clear that any combination of 

 bodies must have a constant unchangeable proportion, 

 which can neither be greater nor smaller without some 

 cause acting externally, because, otherwise, nothing certain 

 could be decided on by comparing them. It therefore 

 necessarily follows, that every possible combination of two 

 bodies stands in the most exact relationship with every 

 other, and this relation expresses the degree of combina- 

 tion." 



' Page 9. " These smallest particles of each body have at 

 all times, in a natural state, a determinate figure ; but the 

 whole mass of the body takes a form according as chance 

 or art gives it, without causing any change in the smallest 

 particles, just as the tender fibres or tubes in a piece of 

 wood remain always the same, although the whole piece 

 may be in the shape of a ball or a cube." 



' Page 10. "I examine the natural structure of some 

 metals, I see certainly nothing more than that they are 

 hard, solidly united heavy bodies, which become liquid 

 in the fire at different degrees of heat, and lose their 

 former connectedness (or cohesion), and without being 

 heavier take up a greater or less space than before. This 

 is enough to enable us to conclude that the figure of the 

 smallest particles of metals is changed by the fire, and that 

 the fluid condition of the whole mass and its altered 

 specific gravity are the necessary consequence of this 

 alteration of figure. For when the mass of a body without 

 change of weight takes up a greater or less space, it is 

 certain that it can take place under no circumstances 



