CATARACTS, AND INUNDATIONS. 



the muriats of lime, soda, and magnesia. The power which the 

 earthy muriats possess of acting on the intestinal canal, is not quite 

 ascertained, bnt from their great solubility, and from analogy with 

 salts, with similar component parts, we may conclude that this forms 

 a principal part of their operation. 



The reader will likewise observe, that where the spaces are left 

 * blank, it signifies that we are ignorant whether any of the sub- 

 stance at the head of the column is contained in the water; that 

 the word none implies a certainty of the absence of that substance ; 

 and the term uncertain* means that the substance is contained, but 

 that the quantity is not known. 



P 2 



