OCR Text |
Show 13 0 0f [/90 Creeping of flizmm/r. Chap. X X H l. Chap. x Kiri. Of [/20 Creeping of A'nima/r. I 31 \ fore Pm of [hm Bodies, and lift up their Heads, and afterward Comma; (1,6,, hinder Region, and fo bring it forward toward their Heads, and lo do gain more ground. ‘ . _ . ricrourrh is" Ariflollefin his Book De Imcflit Ammalzltmgddeth a fourth kind of Creeping , Kiddie?) [dill ‘36th by various Arches, and doth not ellentially order, from the curled V‘ngclikc Motion, which is managed by a kind of leflirr Arches : And the greater VVavelike Motion is full of Wonder in a kind of Silk-worm7 which maketh one molt eminent Arch, With a molt crooked Angle heated in the middle of the Back, highly elevated From the Earth; and other diH‘erent Silk-"'OHDS do make many finaller Incurvations ( {omewhat xmulating \Vaves of Water) one Wave impelling another, and receive divers Dil'eriminations of Colours, Shape, and Size: But other Infeéts, aired with many VVaveIike \"otions, are molt truly denominated Silk-worms, whole Backs are varioully acted, with many crooked Arches, being fometimeslifted up, and other times dept-elleti. So that all flow Motion (wherein theBody is moved part after part, as fiep by f‘tep) is reducible to Four kinds, Spiral, Wavelike, Archlike, and hiorion performed by Traétion of one part after another, by the help of many Minute Mulcles, or Fibres contraéling themfelves. Tiiisrgiiiiii'r And we may take our firft rife From the Motion of more perfect Creepin would be moved with great trouble, While the other refleth, but the lide being divided into many lncurvations, is much more readily and nimbly moved, to the great cafe and pleafure of thole Animals: And form are ap. Propriarcd particular Miiicles to the Head, for the carrying it forward, which is thrnf‘t onward not by any other Mufcles, but thofe oi the Spine, fol~ lowing each other in different (ides, and making many {mall Spires, which by divers Mulcular Contractions, do abbreviate the parts of the Body, and carry the Head and Body forward, as being fixed to the Anterior parts of it. The Local Motion of other more imperfeét Animals, is diliinguilhed from thofe of Eels, Lampreys, Congers, and the like, both in Mode and Inlh'ument of Action; the one being celebrated by finall Arches, accotn. partying each other in manner of Waves, and bylefs perfeét‘organs ofAnuLu- Fibres, and {mall fireight Fibres running between, and inlerted into them. Whereas Lampreys, Eels, Congers, dove. being more great, firong, and oblong Animals, are moved by the mediation of Bones, joints, and Mulcles; butkPalmer Worms, and other Infefls, are encircled only with many nar. row thin Membranes, interl'perfed with many Fibrils, which take their rife from the upper incilure, ending in the next below. And one difference between Palmer Worms, and other more perfiga: Creatures (whereupon the firlt are called Iiifeéts) is from many round Eds, isSi>iral~ Animals,as being dreiTed with the better furniture ofOrgansfound in Eels and Serpents, which are aéied with Spiral Motion, confifiing of various {Egments .Lines, encircling the Bodies as with f0 many Rings ( which are worth our of Circles, having not any recourle into each other in order to a perfect Circle, but foinewhat refemble the Circumvolution and Spires of the Inteltines, and are not formed by many Bones, Articulations, or Mufcles of the Limbs, but by l‘cveral infiruments of Motion, appertaining to the Spine, which is furniflied with great variety of minute carved Bones, numerou s joints, and many lhort of Infeé‘ts doth take its tile, and depend; and the Interllices interceeding the Rings, are the proper places of Mufcles: So that we may plainly count (0 many Mulcles are there as Spaces running between the Rings, Mufcles, which do all act their feveral parts, in the {lender Bodies of thefe long Animals, moved by many lateral Incurvations (wherein one part is haled after another) difplayed in Four it‘veral Pofiures. The fir-{i is that above, celebrated by the Mufcles, elevating the Head and Trunk from the Ground, which giveth a profpeét of goodbot ill Accidents, to embrace the one and refui‘e the other. wmmw ~Whe lecond Pollure of Eels and Serpents, in reference to the Motion of Spires, 1 guanineis made by Deprefiton; as by Mufcles, by whole Contracl ion, the FY D‘Pmmn' Body is inclined downward toward the Ground. The, third l'olture of Motion is Lateral, made by the alternate Incurva- tion of one fide after another in forming Spiresl which are accomplifhed by many] ateral Mufcles, lhortning the parts of the Body, by which it is drawn forward little by little, according to the nature of Motion in Oblong Bodies, refting on many parts of the lower Region, which give ["0 many lizeps to the total Motion of the Body. So that the lateral Motion is produced by the alternate flexions of the Spiral 'Vertebres, inclined fornetimes to the right, and other to the left fide, and this Fleioon is not made as by the Articulations of more perfect Animals, according to Angles, but by Arches and Mufeles, imparting Tendons to every Verteb Spires, Formed by many finall re of the Spine, which are bent one after another toward the Head. So that the many. Mufcles belonging to feveral Articulations, being contracted and abbtcvmted, cannot incurvate the whole Spine, into one great entire Arch; becaufe it would prejudice Motion, if each fide fliould be furmflied only With one Mlllclc, upon whole Contraction the whOIe fide would remark) as divers Centres of Motion, from and upon which, the Creeping Which is evident in every Interl‘tice, when the Palmer VVotln moveth its Body, part after part in many Incurvations. Whereupon it is very probable, that every Mulcle lodged between the Spaces, deriveth its origen from the Annular Membrane next the Head, and doth terminate into the Ring immediately following toward the Tail, and the upper Ring (in the motion of every Mufcle, is the Hypomoclion) to which it is fafined, which being imrnoveable, the Mufcle contraéting it felt, lhortneth the Space pafling betWeen the Rings, and by drawing the lower Ring nearer the upper, pulleth part of the Body toward the Head, which is a ftep in order to the Creeping Motion of the whole; which is managed by a Chain of Motion, confiliing of many Links, or Rings, tying the Mufcles together, which are playing one under another in Succellive Motion. So that in this rare Scene, the upper Machine firft movcth, and then the next, and {0 all the ranks of Mufcles {bated one under another, do fuccell lively contraét and [horten the Interltices of the Rings, whereby they pull the Body forward part by part, as by f0 many Intermedial fleps : So that Ihcle ranks of Fibreslodged between the Annular Membranes, do fomwhat rClicmble the Intercof‘tal Mulcles ( lodged in more perfeét Animals) which are like a Tcem of Horfe, pulling the Ribs one after another, in order to the dilatation oi~ the Thorax, in which the rows of Fibres placed between the Inciliire, do differ from the Intercofial Mufcles; becaule they by narrowing the Interliices of the Annular Fibres, do not dilate the inward Cavity of the h'lufclts, but pull one Incifure nearer another, toward the Head, and by conrequence draw gradually all the Body forward. The] rpm , Thetliirdkind of Creeping belonging to Inléfis, is performed by greater iii; 3,05%: Arches, and is that of a kind of Worm, called by the Latines, Geometm, Mme"? one great and Arch. |