( fO ) 
who has conlkier’d this cafe in fome People after Flur« 
ing, will allow the jiiftnefs of this Exception. 
The Dofes of As Vomifing Medicines have the fame common Dofes 
r omiting with tliofc that Purgc, they admit alfo of the like divi- 
Aiedh'mes* Dofes 5 which, therefore may be found by the fame 
Tables. Only, as People thatareinore Coftive than or- 
dinary require a proportionable greater Dofe of a Purg- 
ing Medicine : So they require their Dofe of a Vomiting 
Medicine to be conliderably lefs, as is very very well 
known in hot Countries. 
Not: I. hut it muff be obferved, that in the Tables, Jge ftands 
inftead of ^tanthy of Blood 5 becaiife they encreafe pret- 
ty equally, and it makes the practice more eafie to fuch as 
are not accuftom*d to Weights and Numbers. 
^ The more Skilful are defir’d toobferve, that the mean 
Ages, multiply ’d into the mean Conftitutions, give Dofes 
more nicely. - 
The TABLES. 
Some Inflances Jhewwg the T)efe^s of the prefect Bra&tce, 
ttfid hoiv mended by the foregoing Tables, 
The Dofes of the foregoing Tables, arifing from Cal- 
culation, agree perfectly well with the common Obferva- 
lion of the beff Authors ^ tho* their Obfervation is very 
general and ill made, if we except the very fir ft Steps. 
'Authors Cu> For in fta nee. Authors of all Countries, Englifi, Dutch, 
py, bi^ do German^ Italian and French, reckon the Dofes after the 
mtObjerv:. manner 5 whereas, if they had been obferv’d, they 
muft .have been different as are the Conftitutions of Men 
in the different Countries. 
IL The defeift of their Obfervation is manifeft by the^ 
difproportion’d Dofes of fome Medicines, their high Do- 
fa being fometimes double and fometimes triple, and 
more 
