The PREFACE. xvli 



difcoveries he has made on this fubjedl^ 

 and which in the coiirfe of this ivorky 

 we have made due achiowledgement 



of. 



TERMS of arfy and ohfcurity in 

 exprejjiony have purpofely been avoided 

 as much as pcj/ible-, (though Jometimes 

 the nature of the fubjedi has Jorced us 

 to deviate from our intended plan:) 

 For indeed we are more defirous oj being 

 intelligible to the meaneft capacity^ than 

 ambitious of writing in a polified Jiile^ 

 to which we make no pretenfons\ and 

 on this account we expeB fome indulgence 

 from the candid reader, 



THE receipts^ it is hoped-, will not 

 be thought too numerous^ as their pre^ 

 ference to each other is generally pointed 

 out; and as the ingredients of fome 

 may not always be procurable y it was ^ 

 therefore thought necejfary to fubjlitute 

 others in their Jlead, Befdes, the dif-- 

 ficulty that occurs in adjujling the 

 quantities and qualities of various drugSy 

 though a thing familiar and eafy enough 

 to one acquainted with medicine^ would 



b have 



