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Show W»... wfl'w-C'WP‘W ~ «w.._n,w 42 Furtlwr Confirmation (y' Absorption by [be Lyizip/Jafic Vcssclr. Fur/bur szfi/‘nia/iuzi zy' ‘r'Ifla'tll‘AIIfitlll [7y tbs Lymphatic Vessels. the same time that it refuted the doctrine of absorption by red veins, in the strongest manner confirmed that of absorption by the laeteals. They quickly absorbed the milk, the solution of starch in water, coloured with indigo, the musk-water; in short, every fluid which was thrown into the. cavity of' the intestines. I have already mentioned the arguments wl ch induced Dr. Hunter to advance. the doctrine, that laeteals and lymphatic; were the same species of vessels, and that both absorbed. I come. now to offer some additional proofs of this. An accustomed eye finds very little. 43 ant chvlo, ant lymph-a, ant caerulco liquore, qiiem animalia, absorbere co- egi, sub ipsis intentis meis Oeul ., toties vidi ha:c, sive lymphatica vascula, sive lactea evanescere." Malpighi suspected that the lymphatics persisted in absorbing, even for some time after death; I foundthis to be true in qua- (li‘iipetls: on making ligatures on the trunks of the prinCIpal blood vessels, no lymphatics were then visible; but in an hour after I found them turgid . with lymph. dilhcnlty in dis‘tiiiktguishingi lymphatics from every other species of vessel, in men or qnadrupeds; their valves, their general appearance, their inter- Some modern anatomists assert from experiments, that the absorbents or the human body, even 40 hours after death, take tip warm water coloured with ink, and thence become visiblet-Thesc experiments did not succeed course with conglobati‘ glands, Stlf'liClCtltly mark them. Now the lymphatics are not only branches of~ the same trunk, as Dr. Hunter observed, but there is such a connection between them, stich an anastomosis, that the with me. _ . In women, on the third day after delivery, when the breasts become tinged with milk, the lymphatics commonly relieve the distension by absorb- fluids absorbed by the laeteals are in part transmitted to the lymphatics, and through them, at last, conveyed into the blood. A very remarkable in- stance. of this kind 1 demonstrated at lecture in \‘t'indmill Street, in the ing part of the milk, and carrying it back again into the blood; these lym- year 1785. The lymphatics of the diaphragm, which also belong to the. liver, were seen turgid with chyle, which they had received from the lac- t;-als, some of which were passing that way, towards the snbclavian veins. A stronger proof that lymphatics are absorbents, is, that whenever fluids are cxtravasated on surfaces, or into cavities, or whenever such fluids preternaturally distend their reservoirs, the. lymphatics belonging to these sur- faces and cavities are found full of the saint: fluid. This is better demon- strated, when the fluids mentioned happen to be ofa strong colour. Thus I have repeatedly seen, iti animals dying of~ haemoptoe, and in the human subject itself, the lymphatics of the lungs, which at other times contain a transparent fluid, turgid with blood, which they had absorbed from the air- cells. \Vhere gall-stones, in the ductus Communis coledochns, or in the cystic duct, have prevented the bile from flowing into the intestines, and the gall-bladder, in consequence of this, became preternaturally distended with that fluid, I have also seen the lymphatics of that reservoir full oftlie bile they had absorbed from its Cavity. Baron I'Iallcr asserts, that he had repeatedly seen the lymphatics, as well as the lacteals, full of the coloured fluid l ic had tlnown ~ ' into the. lning ' v' body.. " In animale, ‘ cni' pleiia fuernnt ‘dUL w..Mil..."- M VWJ-Qh phatics pass through the glands of the arm pits, and either fromthe new stimulus, or from distending them more than usually, the milk inflames them, they swell, and become tender to the touch. When ‘a child has been innoculated in the arms for the small pox, the variolons matter begins to be absorbed from the artificial pustle on the 7th day, sometimes red lines may be seen going from it to the lymphatic glands of the arm pits, sometimes only hard and tender cords, as it were, may be felt; but whether these be present or not, the glands very commonly swell and become tender to the touch, exactly in the same way as when the venereal matter of a chancre passes from the penis to the glands of the groin in producing a btibo. These last proofs are not so strong as those examples where we see the matter absorbed actually in the absorbing vessels, but we have the Strongest the reason from analogy to believe, that the writoms stated, are equally eHects of absorption by the lymphatics. W |