OCR Text |
Show 0f the Hair of Infifir. I300k Ill. Book III. Thefe round little Animals are befpecked with dark coloured (pots, with ‘ _ which the wings of Butterflies are befiudded. The Pifmire is a pretty brisk Infect, always in action, its Head and C H A P. XXIV. Thorax item to be adorned with .Black fpots, which I conceive to be tufts of Hair; and its Body is armed with a kind of dark Shell, all befpangled with bright {hining Brifiles; and its Head, Horn, and Legs, and middle part of the Body, are befiuck with Hair, as it is well ob. 0f the Pericrani‘um. fervcd by learned Mt. Hook. Black or wandring Mites have their Bodies armed with many Arrrows icrwith light next Oval Shells, engraven with variety of Cavities, befet with bright '1" H E ‘Perz‘cmnium hath its lodging between the MembranaCumaflz Th: fituarion Hair (all pointing backwards) which giveth a Lu‘fite to this indu nous Animal, whole Head tapoureth into a Snout, parted with a Scam, running all along the middle of it, and is endued on each {Me with numerous Hairs, tending forwards. TthtgsoF The Crabdike Infeét is fcoloped with many minute Shells, and ‘furfigfl'flfig? «nifhed with 1! egs, like thole of Crabs, confil'ting of many joynts, cover- of the Cranium, and invefling the temporal Mufcle to the ()fliz jugalia and is a Coat dil'tinit [from theaproper Membranes of the laid Mulch-s, (ending near the Oflh 7ugalz'zz ) And their proper Coats ( being their Tendons,) do accompany them under the Ofliz jugalia, to their inlErtions, in- Wandring Mitts are he- "1'" "W‘mh ed on each fide with fruitful Brifles, with which alfo fmall Cheek Bruits. Mites are hefet, growing out of Shells caling their Bodies, as with Suits of Armor. and the rPeriaflium, and is a Membrane, encircling all the bones, fhiiihim' to the acute Procelles of the lower Mandibles. The Pericmninm, accordin to 'We [in in: Fall has and other An . milis, confiileth of a doublegCoat, {he gone) adjoyihetli to the Membriirt; Sfinii't'mk Carnofa, and the other to the Skull, by reafon thefe Learned Men make 23mm" the @erioflium (the proper Tunicle of the Skull) to be one of the Coats doubh'coa" of the ‘l'ericrznium', which deriveth its Origen from the {Dam Mergmx, it being ( aslconceive) an elongation of it, and as palling through the Sutures of the Skull, expandeth it {elf all over the ‘Periofiimn, which is mall: evident in Infants, before the bones of the Skull are clofed; f0 that the @eritranium being naturally united to the Dim: Menynx, upon the top of the Head , m pain-1. in the lirlt produélion of the Bones of the Skull, but afterward when} they 317332,: arrive at greater maturity, and the Sutures are indented, and received with- 1""va in each others embraces, the Dara Mater is much nipped, and fevered from 3353);:ch the Pericram'um, and preferveth its Connexion with it, only by Fibres, by Whofcinterpofition they hold an intimate correfpondence with each other. The rPtricranium is continued above on the top of the Head, to the Du- " Menynx, and below to the Skull; and in the upper part of the Neck, to the common Membrane, relating to the Mufcles, which is a membranous Expanlion, derived from the Dura Mater, by the mediation 'of the Perztmizium, and thence difpetfed as a common Velt clothing the Mufcles of the whole Body, and particularly the Fafa'a Lam, to which it is fo clolEly fall:ned, that it is difficult to feparate it from the Coats of that thin Mulcle; but the common Integument of the Mufcles delcending a little to the Leg, 1s calily parted from the proper Coats ofthe Mufcles. The ‘Pericranium is furnilhed with variety of Blood-veflels, Arteries from The Bloodthe external Carotides, and Veins from the outward Jugulars, fomc of Which ice-$1,222? creep through fmall holes ofthe Skull, and inolculate with the internal jugulars, which have recourfe to the Third Sinus; whence the Blood is dif- Charged out of the (Parity-win»: by the external Jugulars, into the great SiTWS wherupon the 7'ericmnium being inflamed, the Brain it Felf is draWn Into confent by the external courle of the Blood, tranfinitted from the 'Pe- "WWW" by the external Jugulars, pafling through the {mall cranies of the Skull, Into the Dara Mater, and ending into the Third Sim" of the Brain. f The Pericrrmimll hath Nerves, from the Third pair of the Brain, ifl‘uing thfh§cfi;§f 1mm thence through the cranies of the Forehead into the ‘Peritmninm, which "WW"iath allo other Nerves from thofe of the Firlt and Second conjugation ofthe Neck, and from thence being reflected about the hinder part of the Head, do dinl‘ihute many finall Fibres into feveral parts of the @ericranium, rendring it |