338 Relation lettveen tlie Specific Gravities and 



conceive themselves to be as patient and attentive in experi- 

 ment as the majority of persons ; but they are obhged to 

 confess, that tlicy so far prefer these experiments to their 

 own, that they have long taken them as the groundwork of 

 all their calculations for the graduation of their spirit-hydro- 

 metera. 



§ 39. As every one into whose hands the prer^ent essay 

 may fall may, perhaps, not be in possession of the tables 

 of Mr. Gilpin, avc shall in this chapter present the reader 

 with two short but correct tables of our own, calculated 

 from his experiments by the methods before given in the 

 last ; by the help of which the per-centage, according to 

 the mode of estimating it, described and recommended in 

 § 2f), and the concentration per cent, on reducing any 

 over-proof spirit to proof, or proof to an under-proof, niay 

 be accurately obtained, and that even with more facility 

 than from those of Mr. Gilpin himself, in their present 

 t>tate of arrangement. 



Table I. 

 For gliding the Specific Gravity of any Spirituous Com- 

 pound at 60°, uhen that which it possesses at any other 

 Temperature is given. 



VSF. OP THE TABLE. 



The above Table is to be entered with tlie existing specific 

 gravity of the liquor, against which will be found the cor- 

 rection to be added to it for every degree which its tempera- 

 ture is liigher, or subtracted ior every degree which it is 

 lower than 60°. 



Example. 

 If a quantity of ruvn is of the specific gravity of S94 at 

 73"^', what will be its specitic gravity at Go" ? 



Jn.i. 



