[ 4 &° ] 
Animals, a fort of Compound, the Springs of whole 
Motions are aduated by a kind of Soul? And, if 
they have within themfelves fuch a Principle, how 
can this Principle afterwards appear in every diftind 
Piece ? Shall we grant, that there are in thefe Worms 
as many fuch Souls as there are Pieces of the fame 
capable of becoming complete Worms ? Shall we 
believe, with Malpighi , that thefe forts of Worms are 
all Heart and Brain, from one End to the other? This 
may be ; and yet we know but little the more for it. 
After all, we muft content ourlelves with admiring 
the aftonifhing Works of the Great Creator, 
and fit down in Silence. 
VIII. The Nicety of the Senfe of Feeling in Spiders 
has been much talked of; yet do not I know whe- 
ther our Worms may nor, in this Particular alfo, 
fhew fomething (till more furprifmg. I have already 
obferved, that upon bringing near them the End of 
a Splinter, they begin to frisk about, almoft before it 
reaches them : And I have fince made other Experi- 
ments, which leave me in doubt, whether it is not 
rather to their Sight than to their quick Senfe of 
Feeling, that I ought to abferibe what I obferved in 
this refped. I have found, that, when the firft Rays 
of the Sun came to fall upon the Velfels of Water 
in which I kept thofe Infeds, their Motions feemed 
prefently to become more lively. I have fancied, at 
lead, that I faw the fame thing, when, after having 
put them into the Shade, I threw the Light of the 
Sun upon them from a Looking-glafs, or when I 
obferved them by Candle-light : But what feems lefs 
liable to Miftake, is, that I have feen fome of them 
creeping about in the Moon-Ihine, that in the Day-light 
