PHYSICAL AND LITERARY. 319 



Art. X. 



Remarks on chemical Solutions and Precipi- 

 tationSf hy Andrew Plummer, Af. D, 

 Felloiv of the Royal College of Phyftcians^ 

 and Profejfor of Medicine and Chemijlry 

 in the Univerftty o/* Edinburgh. • 



THAT I may not give the firft in- 

 ftance of breaking in upon the or- 

 der and rules eftablifhed in this fociety, 

 I fhall lay before you, at this time, fome 

 mifcellaneous obfervations on tlie folu- 

 tions and precipitations which frequently 

 occur in the profecution of chemical in- 

 quiries. 



I fhall lay down thefe remarks by way 

 of propofitions, and, after each, fhall 

 mention the facets or experiments which 

 gave occafion to the remark, or which 

 confirm and illuftrate the propofition. 



Although many of the inftances 

 which I am to adduce are common, and 

 well known to every one verfant in che- 

 mical 



* January 3. 1738. 



