[ 370 ] 



to put the publick on their guard till the fafety of 

 thefe vefTels be more fully afcertained. My late 

 ingenious friend Mr, Hayes has already offered fome 

 judicious ftridbures on the abufe of thefe veffels in 

 dairies, and mentioned others as proper to be in- 

 troduced in their place.* 



But if veflels of caft-iron, which he propofed to 

 fubftitute for leaden ones, fhould be found to im- 

 part an unpleafant colour or chalybeate tafte to the 

 milk, (as we have reafon to apprehend) it will prove 

 an infuperable objefcion to their ufe. After all; 

 the wifeft ftep would be to return to the ancient 

 wooden bowls of our anceflors, than which nothing 

 can be more perfectly fafe or free from fufpicion. 



Vinegar, Pickles, acid Fruits, &c, — Thefe 

 adl powerfully upon lead and its preparation, and, it 

 is to be feared, often acquire an unfufpeded im- 

 pregnation of that metal in various culinary pro- 

 cefTes, Thus when vinegar is diftilled in a pewter 

 alembickj or pafles through the worm of a common 

 ftill, it carries with it a portion of the metal. The 

 procefs ought therefore always to be performed in 

 (tone or glafs veffels. — It is a very common, but 

 dangerous mrftake, to fuppofe that vinegar may be 



♦ See the Bath Society's Papers, vol. iv. art. lo. 



trufted 



