49 



linen strainer, the water, after under-going a few filtrati- 

 cms, will lose all its brackish taste. 



In order to keep fresh water sweet, take of fine clear 

 white pearl ashes, a quarter of a pound, of avoirdupoize 

 weight, and put into one hundred gallons of fresh water 

 (observing thk> proportion to a greater or lesser quanti- 

 ty) and stop up your cask as usual till you have occasion 

 to broach it for use. As an instance of its- utility and 

 success, Dr. Butler put an ounce of pearl ashes into a 

 twenty-five gallon cask of Thames water, which he stopt 

 up very close, and let it stand for upwards of a year and 

 a half, opening it once in four months, and constantly 

 found it in the same unaltered condition and perfectly 

 sweet and good : afterwards he made use of some of 

 it in boiling pease and burgoo, and found that it made 

 the pease as soft, and answered for all purposes to 

 which he applied it, as well as water fresh drawn out of 

 the river. 



To this short sketch of what is observable in the ter- 

 raqueous globe,! subjoin some of the beautiful reflecti- 

 ons of Mr, Hervey. 



" What an admirable specimen have we here, of the 

 Divine skill and goodness \ This globe is intended, not- 

 only for a habitation, but for a storehouse of conveni- 

 ences. And if we examine the several apartments of 

 our great abode, we shall find reason to be charmed 

 with the Displays both of nice economy and boundless 

 profusion. 



" The surface of it, the ground, coarse as itrnayseem, 

 is yet the laboratory where the most exquisite operati- 

 ons are performed. And though a multitude of gene- 

 rations have been accommodated by it, it still continues 

 inexhaustible. 



" The unevenness of the ground, far from being a de- 

 fect heightens its beauty and augments its usefulness. 

 Here it is scooped into deep and sheltered vales, almost 



