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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.
13.That the Worms give no light, when irritated, but if they do, the light lasts but a very little time, whereas that which appears in those, that were not angred before, continues a great while; the Observer affirming to have kept of it above 2 hours.
So far the Journal des Scavans; which intimates withal, that if the Observers had had better Microscopes, they could have better examin'd this matter.
But since the curious here in England are so well furnish with good ones, 'tis hoped, that they will employ some of them for further and more minute Observations of these Worms; it being a matter, which, joyned with other Observations, already made by some excellent persons here, (especially Mr. Boyle) upon this subject of Light, may prove very luciferous to the doctrine of it, so much yet in the dark.
Some Observations
Of the Effects of Touch and Friction.
The Operations and Effects of Touch and Friction having been lately much taken notice off, and being lookt upon by some, as a great Medical Branch, for the curing of many diseases and infirmities; it will perhaps not be unseasonable to mention (here also) some Observations relating thereunto; which may give an occasion to others, to consider this subject more, than has been done heretofore, and to make fur-
