s&9& ( 53 1 ) 
Operatio autem harum aquarum in primas P* 6g 
vias adeo certa eft, vt inter praeftantiffima pur¬ 
gantia referri pofiint, nec opus fit in eorum vfu 
alia purgantia medicamenta praemittere aut in¬ 
terponere. Licet enim iis minus prodeffe affe¬ 
runt nonnulli medici, in quibus non protinus 
per inteftina et vrinae vias transeunt, cum par¬ 
ticulae admixtae retineantur et noxam corpori 
afferant: Nofter tamen et per vias, fenfui non 
adeo obuias, eas transire contendit. Praecipui P* 7 2 
nimirum harum aquarum effe&us funt: aequalis 
fanguinis diftributio, alimentorum, facilis elabora¬ 
tio, lentoris humorum refolutio, virium corporis 
inftauratio et fpirituum excitatio, exc> etionum 
optimus fucceffus. Sub finem etiam fomnum 
meridianum-cum aquarum vfu eodem modo vti- 
lem iudicat, vti refrigerium aeris vefpertini, in 
quibus omnibus nos mentem Cl. Auctoris indi- 
cauimus, iudicium vero de methodo aquis mine¬ 
ralibus vtendi Lectoribus noftris permittimus. 
XXVI. 
AnExperimentalHiftory of the Materia Medica, 
or of the natural and artificial fubftances ma¬ 
de ufe of in medicine: containing a com- 
pendious view of their natural hiftory, an 
accountof their pharmacevtic properties, and 
an eftimate of their medicinal powers, fo far 
as they can be afcertained by experience, or 
by rational indudtion from their fenfible 
qualities. By w i l l i a m lewis. M. B. 
F. R. S. London printed by H. Baldwin, 
for the Author; and fold by R. Willock, 
1761. 4 mai. 3 Alph. 12 pl. e. praefat. 
