a 
A| 
y Moties 
Let. VI. of Taf 
283 
Principium will be loft. And for the precife meafuring of all the Four 
Termes, it thould be done by a Minute-Watch or a Minute-Glifz. For 
fo it will appear, that the Variations of each, are divers and re- 
marquable, 
3. $. To inftance firft in thofe of the Principium. Which I call, 
That fpace of time, betwixt the firft Contaé of the Body to be tafted, 
and the firt manifeft Perception of the Tafte. For Example, thofe 
Bodies which are Acid, or Bitter, as Vinegar or Wormwood; are pre- 
{ently perceiv'd, quaterus Acid or Bitter, upon the firft Contat; or 
have Principinm brevilfimum. Thole Bodies which are Acria, have 
their Principium fomewhat longer. So the Seed-Cafes of Clematis 
peregrina, although they have a vehement Acritude, even in the Tenth 
Degree ; yet is not that Acritude fo foon talted, as the Bitternefs 
of Rofes , which is but in the fecond. But the Principinm of Hot 
Tafts, is generally longer than that of any other. So the Bätternefs 
of the Root of Black-Helebore, which exceedeth not the fecond De- 
ree, is yet prefently tafted: but the Heat proceeding from the fame 
os and which afcendeth to the third Degree, is not perceived at 
till after two full Minutes. And fo the Bitterne/s of Emula, which e: 
ceedeth not the 4 Degree, yet is fooner talted than its Heat, which 
afcendeth to the 8th. 
4. $. Next, inthofe of the Augment. Which I call, That fpace, 
betwixt the firft Perception of the Tafte, till it be come to the heighth. 
Sothe Heat of Galangale, is not only prefently perceived, but arifeth to 
the heighth within half a Minute. * But the Heat of the Root of Exula, 
comes not to the heighth till after a whole Mizute. And the Heat of 
Black: Hellebore, not till after four full Minutes from the firlt Contad. 
5. $. The Status, or fpace wherein the Tafe continues in its heighth, 
is alfo divers. So the Heat of the Seed-Cafe of Helleborafter, comes to 
its heighth, and begins to decline within half a Minutes that of the 
Root of Garden-Scurvygrafs, not till after a Minute 5 and that of the 
Root of Afarum, not till after two full Minutes. 
6 $. And Laftly, the Declination, or the {pace betwixt the firfk 
‚Remi}fion of the Tafte, and its total Extinéfon. For inftance, The Leas 
of Millefolinm, are Bitter in the 4h Degree, and Hot only in the ıft. 
yet the Heat continues forfometime, and the Bitter prefently vanifhes. 
Calamus Aromaticus, is Bitter in the 4 Degree, Hot inthe 1% and A- 
romatick in the 34: yet the Bitter quickly vanifhes, the Heat conti- 
nues two Minutes, and the Aromatich feven or eight. The Heat of 
the Root of Contrayerra, is extended, almoft to two Minutes; the 
Purgency of Jalap, almoft to fix; the Heat of Garden Scurvygrafs, to 
feven or eight. And even the Bittere of Wild Cucnmer, to near a 
quarter of an hour. But the Heat of Exphorbium dureth much longer, 
as alfo that of Black Hellebore. fe. above half an hour. 
7. $. Sothat the Augmentum, is feldom extended beyond Four or 
Six Minutes, from the firlt Conta : but the Declination, fometimes to 
Thirty, Fourty, or more. Thus far of the Terms of Taff, or the man- 
ner of their Intenfion and Remiffion. 
Te 3 CHAP, 
