28 Dr. Ure on Clihrick of Lime. 



unavoidable, would afford 2 tons of ordinary powder, with 

 a little more slaked lime. 



Since writing the preceding paper, I have prepared a carbo- 

 nate of manganese, by adding carbonate of soda to the metallic 

 sulphate, and after thorough edulcoration, dried the precipitate 

 in an exhausted receiver, containing a basin of sulphuric 

 acid. Its constitution is exactly 2 atoms of carbonate of man- 

 ganese -1- 1 atom of water, as above given. 



In conclusion, I may state that some manufacturers have 

 generated this chlorine for making oxymuriate of lime, by pass- 

 ing a stream of muriatic acid gas, evolved from salt and oil of 

 vitriol, over a body of manganese. Thus the resulting sulphate 

 of soda is not contaminated with sulphate of manganese and 

 iron, as in the common method. 



Glasgow, December 7, 1821. 



Art. II. On the Neglect of the Bath Waters in the Cure of 

 Disease. 



[In a letter to the Editor of the Quarterly ,/ournaL'] 

 Sir, 



What are the causes of the present neglect of Bath waters 

 in the cure of disease? is a question so frequently asked, that I 

 have judged it my duty, as a physician actually practising here, 

 to consider the subject with all the attention it is in my power 

 to bestow. The result I beg to lay before the public, through 

 the medium of your Journal. 



The external use of these waters is very ancient, so ancient 

 indeed as to be lost in fable. Their use internally is said to 

 have commenced in the reign of Charles II., or toward the end 

 of the seventeenth century ; and it seems to have increased 

 progressively, until within the last twenty or thirty years. 

 During this period, it is notorious that they have gradually 



