OCR Text |
Show W7 Of. ‘Proartflioe [Motion of Pourfioted Anita/iii. Chap. XIX. (b 116 of the Body, being fupported upon unequal Limbs, muft;u51:bl:njol:mk upon the account, the Body refting upon two Centers in tine g 3,] one (3:; but only one in the other, to lupport it', and Wanftingla lmfdc want t; e to anfiticr the Decufiation oflthp when} andf hfigagoed; £9312:airri€d [36:70:13 ‘ r w 10 6 W010 it o r. _ SCISEFEJSdihhlfr,Usiifihliifiwn upon 0TH? Limb, cannot be tranfported frorn Chap. X I X. Of ‘Progrtyii‘ve' 1MOZi07l of Fourf aorer/ A'rzzixmlr. I I7 bent bacliwar ., not forward, but turned outward. But the difficulty yet rcmaincth as to the manner of Motion, whether it is managed by the Al~ rtrml'c \Fotion of the Limbs, affixed to each fide, or Whether foine of the ,,., l:- L‘V trot, Ll,"las of either tide, do joyntly move in Decu lfation, or whether the hinder Limbs of the left, do move with the fore Limbs of the right tide, and fo in cppofire manner. Bur Air/017]} is a good Judg Flcxors and Ttnlors. Id f eak a period to local Motion: And therefore it is mo A wr e y con~ fiiivedpby the Omnipotent Agent, that-Animals fliould be Surnifliledhon each fide with a parity of Limbs, as in Bipeds, or madrupe s, W K: is our . s ) ' PlifriHthf-Vfldhct:d Animals, the right Thigh is lifted up and. bended forward hv the 73/21", and Iliacws Inttrnm, and the Leg alfo being extendeg by the Vaflm, Retina, Inferml/S, and Externm, as by It; TenfloifI is carére forward, pulling with it at the fame tune, the right ide o t 6 (his. iupcds and the left fore, aflifting the right hinder Leg, is alfo firft elevated, ' A r ' * rd b Flexors and then being immediately carried for:ilaiddbyfleiifdi: dotlidraw alo'ng with it theleft fide of the Bruits f Andf after the fame manner the Antagouift Mufcles, theFlexors and Ten ors 0 left Thigh and Leg, do play their partsby Deculiation With the right Foreleo in their divers Scenes, acted by various Machines of Motion, . D\thereupon the right hinder Limb confifiipg of divers Jomts, is put into different Poftures, produced by various Motions of the Antagonift Mufcllefs, and confequently draweth the right tide. toward the Head, and'the et fore Leg and Foot at the fame time running crofs-ways With the right hinder Leg and Foot, doth pull the left tide toward the Head, and prefently after in a fuccefiive Deculfation palling between the left hinder and right fore Limb, the crofs Feet in each fide (when the Center of Gravity is trans- ferred from the Heel to the Toes ) prcfs hard againft the Earth, oy whofe refil'rancc, and the renitencc of the oppofite Feet, each tide ( aéted by feveral Flexures and Tenfions of the Limbs ) is carried forward to the great plcafure and Satisfaétion of Four-footed Animals, prompted by a Wife I rinciple of Nature, for the procuring of due Aliment. . Arifiotle difcourfing the Local Motion of many-footed. Animalsa fuppofcth thefe Creatures to be defliturc of Blood, becaufe their Vital Liquor 13 I: is not nCccflaiy for Blood to be Rcd. not apparalleld with Scarlet. But by the leave of this great Author, 'I humbly conceive, it is not eifential to Blood to be hued .VVltll Red, as it _is molt evident in the produétion of it in a Fattus, during its confinement in the Womb 3 in which when it is firi't generated out of Colliquated Sermual Liquor, it is clothed with a white Robe, as retaining the fame colour With the Genital Juice, out of which it was originally formed. Thus I beg Pardon for this Digreflion, it being my duty to Treat of the Motion of Infeé‘ts, as they confif't of many iFeet, fix, or more, as Aunts, Fleas, Lice, Flies, Bees, and the like, which are accommodated-With {ix Limbs, in Whofe Motion the hinder fil‘fl: aét their parts, and the middleand fore Limbs, afterward difplay themfelves in various Scenes of Motion; which cannot be afied by a general Flexure of the parts .of all the Limbs, as is commonly apprehended, and therefore Nature hath Wifely ordered the prevention of this inconvenience, by contrivmg the middle Limbs, not their: e, to determine this Difpute, it being obfer, mblc in lnl'ecis moving a flow pace , that the hinder and f0 re Foot, have a concurrent aélion in the right, and afte rward the hinder an d fore Foot are aé'md after the fame manner in the left; and fo the (aid tw 0 Feet in either fide, take their turns in Ref} and Motion. And therefore Nature to preferve its choic . e [Eco . . nomy in Local Motion, , hath Wifely inl'cit . uted, that when the hinder and fore Foot entertain the weight of the Body, at the fame inflant the ftid Feet of the Oppofite tide, are removed from the Area, as acted with Motion, the weight of that tide is received upon the middle Foot, wherein the Body is balanced in a kind of equality of weight, left the Body fhould tumb l e toward the right fide. upo n the motion of the Limbs relating to that ride, when the Feet are lifted u from the Floo The myWith l3 balanced mid"?iii-Evil, ‘1‘ch higuiiilmbic "m mm" r : And therefore itis molt prudently contrived by the All-wife Maker, that when the Extream Feet are in Motion, that the weight of the Body fhould be fupported by the unmo ved middle Feet, as the Centers of Motion. So that when the utmolt Feet of eithe r tide do celebrate their Motion, tht middle Foot alternately refteth to fufla Trunk, and the middle alfo doth take in the weight of one tide of the In Six»footedi its turn in Motion ; whereupon In- Creatures. feéts drelled with fix Feet, have them v, employed in Motion, the two Extreain Feet in one tide, and the lizcclccifcléimof middle Foot in the other, and then alfo at $321312: the fame time remain unmoved, the two utmolt in one, and the middle in mm" the other, upon which account the Bodies of many-footed Animals do keep the weight of their Bodies in an equal balance, that they are pref fo erved from falling. And the middle Foot is (0 moved forward in each fide, as it checketh Motion near the fore Foot, and whil e the middle Foot rel't eth in either its tide, the fore Foot removeth from it, and the binder Foot moveth towa rd the middle Foot of the fame tide, which at the fame inft ant, keepeth it felf unmoved in one Ration, as the Center of Moti the Body in that fide, during the Moti on, to underprop the weight of on of the Extream Feet. And Infeéts accommodated with an equal number of Eight, Ten, more Feet ; the four or five Feet, or hm," mg aflixed to the hinder part of the right ggn‘gr‘ggtumy h F [heather by a _ kind of DC- . t of the right fide. And while the many Pofieriot Infeéts ( being fubftirnted in {lea and Anterior Feet of oppofitc fides in d of one Polterior, and Anterior (hiadrupeds) do move, whil Foot in e at the fame polite Poflm mr and Anterior Fee OTC trains, cull‘atioii. time the othe weight of the Body, in whic hw 0 the Omnipotent Architec t, according to a due Weight, Number, and Meafur Order. e, in a moft excellent Iii CHAR Elm‘w : vers Mui‘clcs, Flag; ttiitiilatcli: Body being fupported upon unequalfLimbs, 153310;) beg-0nveyedifrom place to place,by the Alternate Motion 0 ope for]: s ipil so "65ino aiiotlier in mutual Interfec‘tions, but mull neceffari y, a [[2 tier Iroun , hmgw M - The motion oFrhc Thigh and Legs I: mail: by di- |