x05 AGiUC'liI.1URAL MUSE-^lM 



view of manuiadiirm^ it into Crockery arid China tviSr^ 

 A very excellent kind of stone ware is already made, by 

 niixini;- it wiih a ccrtdin prop'ortion ofcommon blue clay. 

 This clay is found on the eastern side of a hill i-isi?!^ io 

 v.u angle of about 40 degrees, and is deposited in strata ha- 

 ving a variable number of dea^rees of nortiiern depressi- 

 on, and the strata arc intersected by veins of pure Hint 

 sand, valuable in the nviuufactory of flint glass ; tljnf 

 siones Are also frequently found. The soil over the bed 

 is o-enerally loose meagre ' arth. free fi-oni ledges ; and 

 from the examinations which have been made, the bed 

 may be said to be nearly inexhaustible. 



In an analysis of 100 grains, they yicl hnK'^G of pure 

 ^"ilex, the remainder were pure cla}', a little water, drid a 

 very small portion of oxid of iron, though ;tearce percept!- 

 ible. When submitted to a stroug heat, it forms into a 

 solid porcelainous mass, without fusion, and retains its 

 whiteness. 



it has a very great affinity for oil, and it is found that 

 rnixcd in equal parts, it even improves the whiteness of 

 whitelead, and adds greatly to its power of resisting th6 

 action of the atmosphere. It must of course be a very 

 useful article in paintlhg. 



The proprietors are Messrs. Dakin, Musey and Far- 

 rar. They have applied to the legislature for an act of 

 incorporation, in favour of which a committee, we un- 

 derstand, has already reported, togctber with the ex-' 

 elusive privilege of manufacturing Tor ten years. 



C^ It is hoped that Franklin will not forget to con- 

 tinue his Communications. 



PRINTED FOR AND PUBLISHED BV DAVID WILEY. 



Price >^ 2.50 for twenty fom" Numhers, 

 To be paid in advance.^ 



