3. That, besides these, the _Observer_ saw some much bigger, that were grayish, with a big head, and two horns on it, like those of a Snayl, and with 7. or 8. whitish feet, but these, though kept by him in the night, shin'd not. 4. That the two first sorts are made of a matter easily resoluble, the least shaking or touch turning them in into a viscous and aqueous matter; which falling from the shell, stuck to the _Observers_ fingers, and shone there for the space of 20. seconds: and if any little part of this matter, by strongly shaking the shell, did fall to the ground, it appear'd like a little piece of a flaming Brimstone; and when shaken off nimbly, it became like a small shining Line, which was dissipated before it came to the ground. {205} 5. That this shining matter was of different colour; some, whitish, some, reddish; but yet that they afforded both, a light which appear'd a violet to his eye. 6. That it is very hard to examine these worms entire (especially the white ones) because that at the least touch they doe burst, and resolve into a glutinous moysture; whence also if it were not for their feet, that are discover'd in their matter, none would judge them to be Worms. 7. That among those, which he observed, he saw two more firm, than the rest, which shone all over; and when they fell from the Oyster, twinkled like a great star, shining strongly, and emitting rays of a violet-light by turns, for the space, (as touch't above) of 20. seconds. Which Scintillation the _Observer_ imputes to this, that those worms being alive, and sometimes raising their head, sometimes their tayle, like a Carpe, the light increased and lessened accordingly; seeing that, when they shone not, he did, viewing them by a Candle, find them dead. 8. That forcibly shaking the Oyster-shells in the dark, he sometimes saw the whole shell full of lights, now and then as big as a fingers end; and abundance of this clammy matter, both red and white, (which he judges to have been Worms) burst in their holes. 9. That in the shaking he saw all the Communications of these little Verminulous holes, like to the hole of Worms in Wood. 10. That in more than 20 douzen of Oysters he shook no shell (10. or 12. excepted) but it emitted light: And found some of this light in sixteen of the Oysters themselves. 11. That this light occurs more frequently in big, than small Oysters; in those that are pierced by the Worm, oftner, than {206} in those that are not, and rather upon the Convex-side, than the other; and more in fresh ones; than in the stale. 12. That having somewhat scaled the Convex-side of the shell, and discover'd the Communication of the holes, wherein the often-mention'd viscous moysture, that has any form of insects, is found; he smelt a scent, that was like the water of a squeesed Oyster.