314 ESSAYS anp OBSERVATIONS 
ther caufe of precipitation, which may pro- 
bably be, that there is a greater affinity betwixt 
the precipitating body and the folvent, than 
betwixt this and the body diffolved ; whence, 
from the difpofition of thefe bodies to unite, 
they fhake off, or drive away from them, 
the particles already joined to the folvent. 
ART. 
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