On a Fire Stone, 



late Mr. Reuben Haines, then an eminent brewer, in 

 Philadelphia, from no other than a public motive, ad- 

 vertised, in a newspaper I cannot now find, before our 

 revolution, the valuable and singular qualities of the 

 stone procured from my father's quarry ; (the one now 

 mine,) by his predecessor in the brewhouse, Mr. MaU 

 lack. Those he mentioned had been under the cop- 

 per of the extensive brewery, now occupied by Morris 

 and Gaul, in or near Market street, for a period, I think, 

 of sixty years. They were, at the time of Mr. Haines's 

 advertising the circumstance, entirely uninjured ; and 

 even the marks of the tools undefaced. I enclose the 

 certificate of Mr. Krehs ; who expresses a laudable 

 anxiety, that others should experience the like advan- 

 tages he has received, from the superior qualities of 

 this material. For myself, I have no objects of per- 

 sonal interest ; but wish the subject introduced for in- 

 quiry and multiplication of materials, essential in fur-^ 

 naces, manufactories and fire places of every species. 

 I am, your obedient servant, 



Richard Peters. 

 Dr. James Mease. 



Secretary of the Philad, Agric, Soc. 



A specimen of this stone is preserved in the Cabinet of the Society. 



Certificate. 



I do hereby certify, that the Fire Stone I procur- 

 ed out of the quarries of Judge Peters, near the Schuyl- 

 kill, and on his Belmont farm, have been exposed to 

 the fires of my brick kilns, for a period of sixteen years. 



