| Again, as to the Motions Corporal, within the Enelofures of Bod 
__| whereby the effects (which were mentioned before) pafs between the 
Rae ao oe , 
1 
ER, a. en Rai, 
Natural Hiftory ; 
Motion, is little inquired. And yet thefe be thethings thatgovern Nature} | 
principally, -and without which, you cannot make any true eAnalyfis and) 
Indications Of the proceedings of Nature. ‘The Spirits or Pnevmaticals})| 
that are in all Tangible Bodies, are {carce known: Sometimes they take | 
them for Vacuum, whereas they are the moft aétive of Bodies ;: Some-} 
times they take them for Air, from which they differ exceedingly , : 3} 
much as Wine from Water, and as Wood from Earth: Someti nes} 
they will have them ro be Natural Heat, or a Portion of the Element of 
Fire, whereas fome of them are crude and cold: And fometimes they will} 
have them to be the Vertues and Qualities of the Tangible Parts which: 
they fee, whereas they are things by themfelyes: And then, when they} 
come to Plants and Living Creatures, theyg@@ll them Souls. And fueh} 
fuperficial fpeculations they have ; like Profpectives that fhew things in- | 
watd; whenthey are but Paintings. Neither is thisa queftion of words, | 
but infinitely material in Nature: For Spirits are nothing elfe but a Na- | 
tural Body, rarified to a Proportions and included in the Tangible Parts | 
of Bodies, as in an Intcgument : And they be no.lefs differingone from | 
the other, then the Denfe or Tangible Parts: And thcy areinall Tangible | 
Bodies whatfoever, more or lefs, and they <re never (almoft) atreft: And | 
fromthem, and their Motions, principally proceed erefattion, Colliquation, | 
Concottion, Maturation, Putrefaction, Vivification, ard moft of the effets of Na-| 
ture. For, as we have figuredthem in our Sapientia Veterum, inthe Fable of | 
Proferpina, you fhall in the Infernal Regiment hear htrle doirgs of Pluto, | 
but moft of Proferpina: For Tangible Parts in Podies, are ftupid things, 
and the Spirits do (in effect) all. As for thedifferences of Tangible Parts | 
in Bodies, the induftry of the Chymifts hath given fome light in difcerning | 
by their {eparations, the Oily, Crude, Pure, Impure, Fine, Grof, Parti of Boties,| 
andthe like. Andthe Phyfisians are content to acknowledge, that Herbs and } 
Drugs have divers parts ; as that Opiam hath a ftupefe€ting part, anda heat-| 
ing part; the one moving Sleep, the other a Sweat following ; and that} 
Ruburb hath Purging parts, and Aftringing parts, &c. Butthis whole Jn- | 
quifition is weakly and negligently handled. Andforthe more fubtil differ- | 
ences of the Minute parts, and the pofture of them in the Body, (which |} 
alfo hath great. effeéts) they are not ar all touched : Asfor the Motions of} 
the Minute Parts ef Bodies, which dofo great effets, they have not been 
obferved at all; becaufe they are invifible, andincur not to the eyes bur 
yet they ace to bedeprehended by experience. As Democritus faid well. | 
when they charged him to hold, that the World was made of fuch little | 
Moats, as were feen inthe Sun. C4tomus (faith he) necefirate Rationis @ Ex- | 
perientia effe convincitur : CAromum enim nemo nunquam yidit. And therefore | 
the tumult in the parts of folid Bodies, when they arecompreffed, which | 
is the canfe of all flights of Bodies thorow the Air, and of other Me hanical 
Motions , (as hath been partly touched before, and fhall be throughl 
handled indue place, ) is not feen at all, but neverthelefs, if you: know it | 
not, or inquire it not attentively and diligently, you fhall never be able to bi 
difcern, and muchlefs to produce, a number of Mechanical Motions. | 
ieS 5 
« 
rits and the Tangible parts ( which are cA refattion, Colliquation, Conco 
Mauration, oc.) they are not at all handled; but theyare put off | 
namesof Vertues, and Natures, and “fttions, and Pafions, and fuch other J 
words. en. , Pea Pt TON! Ly. 
