i 



63,5 



R E Pvf A R K S 



ON 



T H B 



PRE&ER- 



h 



VATION 



OF MARI 

 KERS. 



We come now to the waten. which is one of the moil 



a 



\ 



*v 



and . moil neceflary elements -, and which, if become putrid and of- 

 fenfivey greatly increafes the- fcene of mifery, which opens upon 

 fo brave and fo ufeful a fet.of men as the failors, who devote their 

 health and their lives for the defence of their country. We ob- 



ferved, that though ventilation takes-.off' a great deal of 



the 



o 



f^cn^ 



w 



five fmell of the watei:,Jt remains howej^er ill taftcd, putrid and . 



feveral experiments, ^ found that-. 



very wnwholefome. . I.'have,„ 

 putrid water contains a liver of fulphur, and as nothing- quenches , 

 more effectually and, more fuddenly the fpreading effluvia of the 

 liver of fulphur, ^ and takes off its loathfome tafle than. .quicklime, , 



I 



I would propofe that quicklime diiTol'ved in water, , ihould be -, 

 poured in fuch quaatities into the putrid water, as may be fufii-- 



r 



t 



cient to fupprefs both its bad tafle and fmelL. . The proportion., 

 cannot be afcertalned, as the degree of putridity, of the water is va-- 



rious, and mufl of courfe require either a greater or lefs quantity. 



" 



The quicklime in an iiiftant makes the water potable, and 



fome 



meafure impregnates it with fixed air, which 



the putrid fcr 



mentation is entirely gone off. If the water thus prepared be de- 

 canted from the precipitate, it will not only be palatable, but like- 

 wife limpid and clear. * 



The 



* Since the above was written, I have been informed, that the addition of limewater to 



tKe frefh water, intended for the ufe of the people on board of French fliips, has entirely pre- 



vented 



