[ i8 9 ] 



when cut off and put into the ground again, will 

 produce tolerable good rhubarb in four or five years, 

 but not fo large and plentiful as from feed plants. 



The purging quality of "his rhubarb is, I appre- 

 hend, not fo llrong as the foreign rhubarb - t 30 

 grains of this rhubarb powdered being equal to 

 about 20 grains of foreign rhubarb powdered. 

 $uere> — If rhubarb feed mixed with clover feed, 

 and fown with barley in deep rich lands, and per- 

 mitted to remain four or five years, would not turn 

 to much advantage, apprehending cattle of any fort 

 would not hurt or eat the leaves ? This is an expe- 

 riment I purpofe to make this fpring. G. P. 



Article X. 



On the Danger of ufing of Lead, Copper, and Brafs 

 Vejfels, in Dairies. 



By Mr. Tho. Hayes, Surgeon, at Hampftead. 



[Communicated by Dr. Fothergill.J 

 Gentlemen, Feb. i8/£, 1787. 



MANY eminent phyficians have afiferted, that 

 butter is very unwholfomej while others 

 equally eminent have confidered it as not only in- 

 nocent, but as a good affiftant to digeftion* and 



each 



