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Show Book II' 774- ACamels Heart is wonderful, in reference to 'its dimenfions, as being The Heart of a Camel. Nineteen tranfverfe Fingers in length, and Seven in breadth, and IS ador~ ed with a very acute Cone, confidering the great bulke of the Heart. Book II. 0f t/JL' Heart of girdr. 775 lowed in the infide with two Cavities, to give reception to the Heart, as within Sockets, wherein it hath free play in its various alternate IVIorigns. T he Heart of a Pidgeon is large, if a regard be had to its finall Body, and The Heart of a 1' id gcoa, is adorned with a Pyramidal Figure, as wellas other Birds ; its Bafe is con- netted to the Back by the mediation of the Veaa C4714, and Ar/crz'a Magna, and its Cone is affixed by a Membrane to the left Lobe of the Liver. Learned BUViCIJiM/S faith, the Heart of this Bird is feared in the middle of the CHAP. XXIX. Breafi, but with deference to this renowned Author, I have lien in a Pid- geon (which I have Diffeéted) the Heart bending in its Rafe toward the Right, and in its Cone toward the Left Side: 0f the Heart; of fBirdr. The lame Authorlaith he diltovered a little hole, into which he immitted aHogs Brifle, which pafled clean through the Septum of the Heart into the middle of the Left Ventricle. The Hearts of " Birds are alike theft: of greater Animals. He Hearts ofBirds have great aflinity with thofe of greater and more perfect Animals, both in Figure, Situation, Connexion, and Subitance, as having fleihy, tendinous, and nervous Fibres, as large as other Animals confidcriug the proportion of their Body; and the part of the Sup/um atl- Swans, Eagles, Bui'cards, Ei'tridges (five. have one kind of fituation of the Heart, as the Cone pointeth toward the Left, and the Bath inclineth toward the Right Side; The Apex alfo, both in greater and finaller Birds, is lodged in the Cavities, as in cafes made in the infide of thel obes of the Liver' for the Heart to play up and down in its Diai'tole and Syflole. joyning to the Right Ventricle is fmooth, as for as any Prominency, but the interior part ofthe Scprum is Fibrous; The Lungs and Aorta are furniihed with Semi-lunary Valves, which are open to giVe admittance to the Blood pafling out of the Right Ventricle into the Lungs, and out of the Left into the Aorta; and on the other fide, thefe Semi-lunary Valves, do hinder the regrefs of the vital Liquor out of the Lungs into the Right Chamber, and out of the Trunk of the Aorta, into the Left Ventricle of the Heart. A flei'hy Valve, fir rPlyi.‘ gthc dcrttt ut'thc Tri-Cul‘pidal Valves in Birds. The Ingrefs or Orifice of the Right Chamber of the Heart hath no tricufpidal Valves (which are found in great Animals) but a fleihy Valve (endned with a Semi-lunary Figure) fupplying their defect, and relierh {traight upon the entrance of the Ventricle, facing the Right Auricle, and is open, as giving 3. Reception to the Blood, coming out of the Termination or Orifice of the Veaa Car/a, into the Right Cifiern of the Hear t, which being filled with Blood, this Carnous Valve, {hutteth up the entrance of the Right Ventricle ii) clofe, that the Blood cannot poflibly recoil into the Orifice of the Vcna Cart/a. And though the Right Ventricle in one [idea feemeth fmooth and plain, yet the Left Chamber of the heart in Birds ofa fmall file, is every where fibrous, and allb furniihed with Heihy Columns, which are more prominent then the other Fibres, as having greater Dimeniions; and the [ eft Ventricle is acco- modated with mitral Valves, f0 well contrived by Nature, that the Blood cannot have any recourfe into the Lungs, when the Left \"entricle ofthe Heart is contracted, which may be experimented by cutting of the Cone of the Heart, and by injeéting VVatet into the Left Ciiiern, f0 that the mitral Valves are fwelled, and joyned clofe together, whereby the entrance of the Lungs is [o {topped that it hindreth the paiiage of theWater into the pulmonary Vein, and forceth it all intothe Orifice of the Aurta, which treateth the Eye \\ith a pleafant fight. The Heart of a Goofe. The Heart ofa Goofe is beautified with a kind of Pyramidal crooked Figure, which is flattifh oneach fide; and its Bafe leaneth toward the Right, (and its Cone toward the Left fide ) which is connected to the Back, by the interpofition of the Vemz farm and Aorta. And by reafonin this and other Birds there is no Interfepiment pailing between the Heart and Liver ( as in greater Animals and Fail) ) The Cone of the Heart infinuates between the Lobcs of the Liver, which are hol- lowed The Left Auricle of the Heart ofa Wild Duck, (as Well as other Birds, being opened) is found to be compofed ofmany lairs of fleihy Fibres, lodged one within another. 1‘ And the mitral Valves + may be feen in the Left Ventricle, encompafling the Orifice of the puimonary Vein, hindring the refluxc of Blood out of the Left Ventricle into the Lungs. The Heads of the Carnous Columns are Crowned with divers Branches of Ligaments + implanted into the mitral Valves. Thefe Camous Columns being beautified with a Pyramidal Figure 1- have many Ligaments a. making their progrefs crolswife, which fafien the mzu ny Columns to each other, and keep them in their proper place. The Hearts of mail Birds have their Bar": inclining toward the Right, and thtir Apzsm- ward the Left. The Left Venrrlcleof‘ the Heart of a Witrl Duck. 1 71:; £4. aa ail/iv. |