324f FILTRATION OF WATER.' 



If not exactly the right height, are useless ; and when thii, 

 which is not unfrequent, is the case, the remedy is al- 

 most as bad as the disease, witness Mrs. Smith, having 

 fallen off a parish ladd^f, at Chelmsford, while endca- 

 Touring to save herself in that dreadful fire, in March, 

 1808. It would be needless for me to enumerate in- 

 stances, where a well-timed outward apparatus would have 

 been of essential service — the thing is self-evident, and the 

 occasions for their use have also been many. I would also 

 propose, that a board should be put up, offering a reward 

 sufficient to stimulate persons to bring the machine — for ex- 

 ample, ten pounds for every life saved by it. I think no 

 person would think it too much, who had been saved. This 

 would hare the good efl'ect of having it always in time, 

 which is most essential, as twenty shillings are not sufficient 

 to induce men to the necessary trouble attending such 

 labour. 



Having thus offered my sentiments, respecting the good 

 effects which may be derived were certain regulations put 

 in force, 



I remain, with great feeling for suffering humanity, 



Sir, 

 Your most obedient and humble servant, 

 JOHN DAVIS. 



II. 



New Method of applying the Filtering Stone for purifying 

 Water: by Mr. William Moult, No, 37, Bedford 

 Sqaare *. 



SIR, 



Inconveniences iF you think the following information, relative to a new 



in the common method of filtering water, is deserving of the attention of the 

 mode of using _. _. „ t«i_ tii.i^ i 



filtering stones. Society of Arts &c., 1 Wish you would lay it before them, 



♦Trans, of the See of Arts, vol. xxviii, p. 212. The silver 

 medal was voted to Mr. Moult. 



My 



4 



