( 23 ; 



ground in a mill, then mixed with water, and the 

 vefTels, after being baked in the furnace, are dip- 

 ped into it, and put into the furnace a fecond 

 time j by which means, with a fmall degree of 

 heat, the white glafs runs upon the velTels. This 

 glazing is exceedingly foft and eafily cracks. 

 What effe6ls acids will have upon it, the author 

 of thefe obfervations cannot fay, not having tried 

 them : but they feem to be improper for infpif- 

 fating the juice of lemons, oranges, or any other 

 acid fruits. 



The mofl proper velTels for thefe purpofes are 

 porcelain or china v.are. The fubftance of them 

 is of fo clofe a texture, that no faline, or other 

 liquor, can penetrate them. The glazing, which 

 is made likewife of the fubfcance of the china, is 

 fo firm and clofe, that no fait or faline fubfLance 

 can have the leail effed upon it. It muft, how^ 

 ever, be obferv^ed, that this remark is only appli- 

 cable to the porcelain made in China : for fome 

 fpecies of the European manufactory are cer- 

 tainly glazed with a fine glafs of lead, &c. 



Next to china is the fcone v/are, commonly 

 called the Staffordlhire ware. The fubflance of 



thefe- 



