OX THE ANIMAL ECONOMY.

247

CAROLINE. N

They must then be spread throughout everypart of tl»e frame, for we are every where suscep-tible of feeling.

EMILY,

Excepting the nails and the hair.

MAC. s. '

And those are almost the only parts in whichnerves cannot lie discovered. The common sourceof all the nerves is the brain ; thence they de-scend, some of them through different holes ofthe skull, but the greatest part through theback bone, and extend themselves by innumer-able ramifications throughout the whole body'.They spread themselves over the muscles, pene-trate the glnn;ls, wind round the vascular systemand even pierce into till interior of the bones.It is most probably through them that the commu-nication is carried on between the mind and theother parts of the body; but in what manner theyare acted on by the mind, and made to re-act on thebody, is still a profound secret. Many hypotheseshave been formed on this very obscure subject, butthey are all equally improbable, and it would beuseless for us to waste our time in conjectures onan inquiry, which, in all probability, is beyondthe reach of human capacity.

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