in the Centen occaGonM by theiffuing ouCofthe 6)5^^^ 
thence. This end was not perfectly flat, but a little glo- 
bous? and I could perceive by the fwelling a little below 
on the neck, and wrinkling of the Skin, as in the i%2^r^i 
how it did flioot out, arid contrad iL*s nec\^ as I obferved 
it when alive : For fome little fpace here, I could not ob- 
ferve wich the glaflss any Joynts at all ; but afrer^* very 
thick fet, and finall, and gradually increafing in lengtbj 
as they defcended towards the Tail. 
The ^Wj- of the other two Worms exadly appeared the 
fame in the Mtfcrofcope^ as this defcribed. And after- 
wards by carefully viewing them by my naked eye, I could 
obferve thefe hairs or Spikes. What therefore Tulpius 
faith in his firft Obfervation of this Worm:» of the head 
that was entire;^ and not broken ("and I am pretty confident 
was the onely one it had)that it was circa apicemfummeviUom 
fum^ attamen fine uUq oris hiatuy is true enough. And that 
paflage in Spigelius^ who having given the different opinions 
of others concerning the head of this Worm, adds, a rnultis 
verb creditur caput ejje exiguum<:um paucis quibufdam pedtbus 
more aranearum, muft be underfrood of the Spikes, we have 
defcribed, and will hold good h tho it feems not much re- 
garded by him. 
It was objeded by fome ingenious perfons, who had 
been acquainted with what I obferved concerning this head^ 
whether theft Spikes^ or hairs might; not be like the fmall 
feet of the Tick^ or ^cinus for it's taftening it felf the bet- 
ter to help it's fudion. And indeed were it to^it lived 
upon, the cafe were plain ^ but fince 'tis C/^/^ what fervice 
they could do it in this,ldo not fee',for v^ hen they faften^the 
head is deep immerged in the inward Coat of the Iriteffine ; 
and fo may be thought for that time, toget but a very 
inconfiderable foop^ if any 5 and nothing in proportion 
to what is requifite for fo vaft a long body 5 and what it is 
often obferved to be turgid with. Upon the whole> what 
feems moft agreeable tome, and to be the true of !ch is 
