Essays in natural history and philosophy. Containing a series of discoveries, by the assistance of microscopes / By John Hill.

  • Hill, John, 1714?-1775.
Date:
1752
Catalogue details

Licence: Public Domain Mark

Credit: Essays in natural history and philosophy. Containing a series of discoveries, by the assistance of microscopes / By John Hill. Source: Wellcome Collection.

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    diminiftied toward the other, and were properly not fingly extended acrofs the whole Figure, but arranged in two Series, one covering each Side; or at lead their Continuation was obliterated in the Middle at the Ridge. Toward the fharp End there was a fmall longitudinal Fififure in the Cen- tre of the Rib of the Back ; this had at firft feem- ed accidental to the particular Individual under Confideration, but on Examination we found it exa&ly in the fame Place in all. Hitherto there had appeared no Notice of the Qbjedt being an Animal. The common Excrefcen- cies on the Oak, have as particular and as regular Forms. I no fooner however had railed it with the Point of a Needle from its Situation on the Bark, than the fame Apparatus when directed to the under Part of its Body difcovered it to be an Animal, tho5 an undefcribed, and wholly un¬ known one. We could now difcover at the firft View fix Legs, and one of them which I had wounded with the Needle was in Motion. The Rim which we had obferved furrounding the Body, and had fuppofed to be round, we perceived was hat on that Part where it was applied to the Bark, and had been fixed down to it, by an innumerable Series of thofe Fibres, arifing from its Edges prin¬ cipally, but in fome Degree, from every Part of its Surface. Between this Verge or Rim, and the Sides of the Body of the Animal, there appeared at firft View to be a vacant Space, and the outer Hulk or Shell had therefore the Appcaiance of an artificial Covering formed by the Creature, rather than any real Part of its Body. The Application f of »