\ Voflfiript 
[ * 3 ? 1 
agamji Em piticifm. 
N otwithstanding the great Uiefulnefs and Ten- 
dency of fuccefsful Obfervations in Phyfic and 
Surgery, to encourage Practitioners in a Perfeverance 
in their Duty, even where the regular Prognostics 
hand againft them 5 yet I cannot forbear taking this 
Opportunity to aSTerc the Impolllbility of any Per- 
lon’s obtaining a competent Knowlege of the Art of 
Healing, by Practice only ; without a previous Know- 
lege of Anatomy, and the Animal Oeconomy. 
Hence have I met with an old Practitioner, of very 
extenfive Bufmefs, who had never been educated in 
this fundamental Qualification, and who, for want of 
it, was treating his Patient with Cataplafms and Fo- 
mentations, to cure that Numbnefs in the Thigh 
which is a certain Diagnoftie of a Nephritic Cafe.- 
And I have more than once feen a T>yfuria under 
the Treatment of a gravelly Cafe, when it has plainly 
arifen from the Vena Hamorrhoidales having been 
too much fwelled towards the urinary Paffages. 
Thus, where Men are not qualified to diftinguifh at 
ail upon the Symptoms of a Diftemper, from fome 
true Knowlege of the Parts concerned, they muft 
neceffarily be often mistaking the Symptoms for Dif- 
tempers, and fo vice verfa , after this Manner; info- 
much that their longest Practice will be little better 
than a Multiplication of Blunders, without much 
Chance to be wifer by Time and Experience. Hnic 
Ratiocinationi adftipulatur Experientia y qua fine 
van a omnis Theoria y bella fit utcunopue. 
XVI. A 
