Carpenter's principles of human physiology . sp, A Treatise on the Spleen, , Virchows Archiv, 1861, p. 203. Schweigger-Siedel, Virchows Archiv,Band xxiii. p. 526. Stieda and Schweigger-Siedel, id., Bandxxiv. ; Peremeschko, Sitz-ungsber. d. k. Akad. zu Wien, Band Iv. and lvi., and Muller in Gott. ISlach.,-1862-1863 ;W. Muller, Monograph on the Spleen, Leipsic, 1865, and Striekers Manual of Histo-logy (Syd. Soc. Transl.), vol. i. p. 348. Kyber, Max Schultzers Archiv, Band vi. p. Stoffand Sophie Hasse, Centralblatt f. die Med. Wiss, 1872, p. 753. Klein, S


Carpenter's principles of human physiology . sp, A Treatise on the Spleen, , Virchows Archiv, 1861, p. 203. Schweigger-Siedel, Virchows Archiv,Band xxiii. p. 526. Stieda and Schweigger-Siedel, id., Bandxxiv. ; Peremeschko, Sitz-ungsber. d. k. Akad. zu Wien, Band Iv. and lvi., and Muller in Gott. ISlach.,-1862-1863 ;W. Muller, Monograph on the Spleen, Leipsic, 1865, and Striekers Manual of Histo-logy (Syd. Soc. Transl.), vol. i. p. 348. Kyber, Max Schultzers Archiv, Band vi. p. Stoffand Sophie Hasse, Centralblatt f. die Med. Wiss, 1872, p. 753. Klein, Sci., 1875, p. 363. t See Kyber, Archiv f. Mic. Anat., Band viii. p. 568. 208 OF ABSORPTION AND SANGUIFICATION. the minutest veins, moves in great part through lacunce, or mere channelsin the pulp tissue. The Veins receive their blood from these lacunas, andform at first a kind of rete mirabile, or close plexus of anastomosing vessels,from which the larger veins that accompany the arteries arise. Theveins are unprovided with valves. Fig. Fjg. Section made at the periphery of the spleen in Man. At the upper part isthe fibrous envelope sending off septa (i) into the interior of the organ. Atite centre two Malpighian corpuscles are seen surrounded by the tissue ofthe pulp. The clear spaces correspond to the lacuna of the serous net-work, d. Arterial ramifications. III. The Parenchyma of the Spleen essentially consists of nuclei and cells invarious stages of evolution, imbedded in a granular plasma (the periplast ofHuxley); thus corresponding in every essential particular with the contents of the Peyerian glands (§ 153), and likethem giving evidence of being in a state ofrapid developmental change. Some of thenuclei are large and pale, and eitherspherical or flattened, others are smallerand elliptical. Kolliker and Klein haveobserved certain multinuclear flattenedand branched cells, varying in size, andcontaining from four to ten or more nuclei;and similar bodieshave been seen


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