448 DEODORIZATION OF MANURES. 



I need scarcely describe to chemists the action 

 of this salt, the principal effect being, that the 

 chlorine combines with the ammonium of the 

 sulphuret of ammonium, and the manganese com- 

 bines with the sulphur, thus forming chloride of 

 ammonium and sulphuret of manganese. The 

 former is well known as a valuable manure, and 

 the latter being in a floculent state, will readily 

 supply sulphur or sulphates to vegetables. The 

 salts of manganese and iron are peculiarly fitted 

 for land, both being employed by nature in feed- 

 ing plants, both being akin to earths, and not 

 possessing acrid metallic properties. 



As there are at present in this country not less 

 than 150 tons of this solution produced daily, 

 which is 5|lbs. per annum for each individual, 

 from the experiments I have made, I consider 

 there is more than sufficient to deodorize all the 

 cesspools in Great Britain. 



I may add, that after considering the matter 

 carefully, in the different points of view which 

 would naturally occur to a practical person, I 

 mentioned the matter to Dr. R. A. Smith, and 

 Dr. Lyon Playfair, both of whom fully agreed in 

 the views I had taken on the subject. 



