PREFACE. XIX 



lief and fuccefs. With the very neceflary and 

 additional recommendation, to be particularly 

 careful to obtain their m.ed'icines from Bifpen- 

 faries oi refute, wliere iht frcprietcr is report- 

 ed or fuppofed to have formed zfair^ honour- 

 able, and equitable contrail with emolument and 

 reputation. 



And this caution is rendered more imme- 

 diately worthy confideration, by the multipli- 

 city of fpecious advertifements fo conftantly 

 held forth to promote the lucrative fale of 

 innumerable balls^ pewders, and pa/leSy indivi- 

 dually infallible for every diforder to which 

 tlie horfe is incident. But what renders the 

 circumftance ftill more extraordinary, is their 

 being prefcribed and prepared, by thcfe very 

 metropolitan praaiiicners in medicine, whofe 

 equeftrian pofiefiions ne-jer amounted to a 

 fngle Jleed'y whofe journies or experimental 

 pradice, never exceeded the diurnal progref- 

 fions of a hackney-coach':, and whofe great 

 anxiety for the general good ne^cer furpafled 

 the idea of cejit. per cent, in the circulation. 

 This obfervation comes with a much better 

 grace, when I can affure the public one of 

 the very firft advertifers in this way was a 



niedical 



