A treatise on health and long life ... To which is added to this edition, (not in any former one) the life of the author / [George Cheyne].

  • George Cheyne
Date:
1787
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on health and long life ... To which is added to this edition, (not in any former one) the life of the author / [George Cheyne]. Source: Wellcome Collection.

    70/286 (page 16)
    gethcr, with want of due labour, the third* 2. The meat of England is generally a- nimal fubflanccs. The animals themiclves, from epidemick caufes, bad food, age, or o- ther infirmities, have their difeafes as well as human creatures: and thefc difeafed animals can never be proper or found food for men. Adult animals abound more in urinous falts than young ones: Their parts are more clofc- ly compadled, hecaufe more forcibly united ; and fo harder of digefiion. ’Tis true, the great- diftindlion of the fitnefs or unfitnefs of the feveral forts of animals and vegetables for hu- man food, depends upoi> their original make, frame, and nature (and that can be found out only by experience) as aiib upon the fpecial taftc, complexion, temperament, and habits of the perfon that feedsonthem. But by thehelpof thefe three principles, viz. That the firength or wcaknefs of cohefion of the particle, of fluid bodies, dependj upon their bignefs or fmall- nefs ; that is, the biggeft particles cohere^ more firmly, than the finallcr, becaufc more parts come into contadt in large bodies thaa fmall, and fo their union is greater- Second- ly, that the greater the force [momentum] is, with which two bodies meet, the (Ironger is their cohefion, and the more difficult their fe- paration Thirdly, That falts, being com- prehended by plain furfaces, being hard, and in all changes recovering their figure, unite f-Jie moft firmly of any bodies whatjbever:, their plain furfaces bring many points into eonta^. and union l their hardnefs and con- ftanfc