2O liter and Motion. 



cd stones, metals, woods, salts, and eve- 

 ry thing that may be denominated body. 

 The effects of solders, glue, cements, &c. 

 are all from the same cause. So jewels, 

 hard stones, stalactites, petrifactions, por- 

 celain, pottery, bricks, flags, glass, ce- 

 ments, artificial stones, and plastic earthy 

 compositions, which preserve their figure 

 in drying, all are children of this great 

 agent ; and as this power is much great- 

 er in some bodies than in others, there 

 arises an infinite variety in the strength, 

 the weight, the texture, &c. of metals, 

 stones, &c. for we have powerful reasons 

 to believe that the original particles of all 

 matter are of the same weight ; and that 

 it is this principle that makes thegreat dif- 

 ference in their specific weight. To minds 

 not used to philosophical investigation, it 

 must appear a bold assertion to say, that 

 the particles of gold are not one whit hea- 

 vier than the particles of cork ; but expe- 

 riment and observation shew this to be 

 really the case. 



The grand antagonist principle of the 

 attraction of cohesion is fire (or caloric 

 in the new language of chemistry.) These 

 two opposing powers keep nature in a state 



