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sations as at would have, if it were present. As, if one should knock on's head forcibly against a wall, the shaking, which the blow gives to the Brain, moving the interior extremities of the Nerve, which causes the sensation of Light, the Soul has the same sensation, which it would have, if it saw a thousand Candles: On the contrary, if the interior extremities of the nerves are not shaken, though the object be present, it causes no sensation; whence it comes, that if a strong Ligature be made upon the middle of the Arm, and the hand be then prickt, no pain is felt, because the shaking of the nerves that are pricked, being stopped by the Ligature, cannot reach to the extremities of the Nerves, that are within the Brain.
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The following Errata, left by the Press in Num. 16, the Reader is desired thus to correct.
Page 269. lin 27. read, motion of B. above the Center; G. is also, with a Semi-colon after the word Center. p. 274. l. 13. r. it to do to the. p. 277. l. 24. r. natural days. p. 281. l. 16. r. of his ib. l. 27. r. a notion. p. 293. l. 4. r. enough without. ib. l. 43. r. to the Sine of. p. 294. l. 1. r. to the Sine of.
LONDON,
Printed for John Martyn and James Allestry,
Printers to the Royal Society. 1666.
