The «Putradt. . 
paring Bodies for our taft; as the diffolving of Metals with acid Liquors, 
— make them taflable, which were before altogether infipid ; thus Lead be- 
comes {weeter then Sugar, and Silver more bitter then Gall, Copper 
and \ron of moft \oathfome tafts. And indeed the bufinef? of this fenfe 
being to difcover the prefence of diffolued Bodies in. Liquors put on the 
Tonguespri in general to difcover that a fluid body has fome folid bedy diffolv'd 
in it, and what they are; whatever contrivance makes. this difcovery 
improves this fenfe. In shis kind the mixtures of Chymical Liquors af- 
ford many Inftances ; as the fweet Vinegar that is impregnated with 
Lead may be difcovered to be fo by the affufion of a'littleof an Alcalizate 
folution : Zhe bitter liquor of Aqua fortis and Silver may be difcover'd 
to be charg'd with that Metal, by laying in it. fome plates of Copper : 
Tes not ‘apron alfo,but there may be multitudes of other wayes of difco= 
vering theparts difolo d, or diffoluble in liquors ; and what is this dj be 4 
ony but a kindof fecundary tafting.° ce 
7% riot improbable alfo,but that the fenfe of fecling may be highly im= 
prow ‘d,. for that being a fenfe that judges of the more grofs and robutt 
motions of the Particles of Bodies, feems capable of being improu'd and 
affifted very many wayes. Thus for the diftinguifbing of Heat and Cold,the 
Weather-glafs and Thermometer, which Ihave deferib din this follow- 
ing Treatife, do exceedingly perfeti it; by each of which the haf varia, 
tions of heat or cold, which the moft Acute ‘fenfe is not able to diftinouifhjare 
-‘ manifefied. This is oftentimes further promoted alfo by the help of Burn- 
_ ‘ing-glaffes,and the like, mbich collet and unite the radiating beat. Thus 
the coughnefs and fmoothnefs of a Body is made much more fenfible wy @ 
the help of a Microfcope, then by the moft tender and delicate Hand. 
Perhaps, a Phyfitian might, by feveral other tangible proprieties, difcover 
the conftitution of a Body as well as by the Pulfe. Ido but inflancein 
thefe,to phew what pofibility there mmay be of many others, and what proba-~ 
bility and hopes there were of finding them,if this method were followed’; _ 
for the Offices of the five Senfes being to detefi either the fubtilandcuri- 
ous Motions propagated through all pellucid or perfesily homogeneous 
Bodies s Or the more grofs and vibrative Pulfe communicated through 
| the Air. and allother convenient medinnas, better fluid or folid = Or the 
effluvia 
