CIRRHOPODA. 



683 



in the Bibliography of ARTERY, the following are 

 deserving of notice : Thomsons Lect. on Inflam- 

 mation. Roulin on variations of the pulse at 

 different heights, Magendie's Journ. Jan. 1826. 

 Poiseuille on the contractility of arteries, Magendie's 

 Journ. vol. viii. On the dilatation of arteries, 

 ibid, vol. ix. 44. Weber, H. E. De pulsu in om- 

 nibus arteriis plane non synchronico, Annotat. 

 Academ. 1835. Mich. Jiiger, Tract, anat. physiol. 

 de arteriarum pulsu, Wirceb. 1820. Reinarz, 

 Diss. de arteriarum irritabilitate propria, Bonnae, 

 1821. Kramp, De vi vitali arteriarum, Argentor. 

 1786. 



Veins, and connection of respiration with circu- 

 lation. James Carson, Inquiry into the causes of 

 the motion of the blood, Liverpool, 1815. On the 

 empty state of the arteries after death, Med. Chir. 

 Trans, xi. Sir D. Barry, Experimental researches 

 on the influence of atmospheric pressure on the 

 flow of blood in the veins and on absorption, Lond. 

 1826. On the application of the barometer to the 

 study of the circulation, Annal. d. Sc. Nat. x. 

 Carus, Remarks on the above theories, Meckel's 

 Archiv. iv. 1818, p. 413. Ellerby, Davies, and 

 Serle, Lancet, xi. p. 606, &c. Poiseuille, in Ma- 

 gendie's Journal, x. Arnott's Physics. H. Marx, 

 Diatribe anat. phys. de structura et vita venarum, 

 Carlsruh. 1819. Refutation of the theories of 

 Carson and Barry, Edin. Journ. of Med. Sc. ii. 

 462. Wedemeyer on the same, Edin. Med. and 

 Surg. Journ. xxxii. p. 86. Macfadyen on the cir- 

 culation, in same work, xxii. 271. Wilson Philip 

 on the effect of derivation in promoting the flow of 

 blood in the heart, Inquiry, p. 9, &c. Lugenbuhkr, 

 De motu sanguinis per venas, 1815. J. W. Tur- 

 ner's Remarks on the same subject, Med. Chirurg. 

 Trans, of Edin. vol. iii. Magendie, Influence of 

 Respiration on the motion of the blood in the 

 arteries, Journal, t. i. Bourdon, Rech. sur le 

 mecanisme de la respiration et sur la circulation 

 du sang, Paris, 1820. Defermon on the mutual 

 dependence of respiration and circulation, Ann. d. 

 Sc. Nat. xiii. 425. Hales on the force of the blood 

 in the veins, Med. Statics, vol. ii. p. 27 & 31. 

 Flourens, Sur la force de contraction des prin- 

 cipales veines de la Grenouille, Ann. d. Sc. Nat. 

 xxviii. 65. Nic. Oudemann, De venarum, praecipue 

 mesaraicarum fabrica et actione, Groning. 1794. 

 Kellie on the circulation in the head, Edin. Med. 

 Chirurg. Trans, vol. i. Carson on the same, Edin. 

 Med. and Surg. Journ. vol. xxi. p. 252. 



Capillaries and small vessels. Doellinger, Munich 

 Transactions, vol. vii. and Journal des Progres. 

 Do. Was is Absonderung, &c. ? Wiirtzburg, 1819. 

 Gruithuysen, Beitrage zur Physiognosie und Eau- 

 tognosie, &c. Miinchen, 1812. Organozoonomie, 

 &c. Miinchen, 1811. Kaltenbrunner, Experimenta 

 circa statum sanguinis in inflammatione, Stutt. 

 1826. Leuret, on the same, Journal des Progres. 

 Whytt on the circulation in the small vessels, 

 Works, p. 211. Schultx, Journal Complement, 

 vol. 19; also Der Lebensprocess im Blute, &c. 

 Berlin, 1822. R. Wagner, Zur Vergleich. Phy- 

 siologie des Blutes, Leipzig, 1833. Baumgartner, 

 Beobacht. liber die Nerven und das Blut, &c. 

 Freiburg. 1833. Oesterreicher, Versuch einer Dar- 

 stellung der Lehre des Kreislaufs, Nurnberg. 1830. 

 Marshall Hall, Essay on the circulation of the blood, 

 8vo. Lond. 1831. J. Mutter, capill. circul. in the 

 liver of the Salamander, Meckel's Archiv, xvi. 

 1829, p. 182. Wedemeyer, Additions to his work, 

 Meckel's Archiv, 1828, p. 337. J. W. Earle on 

 the irritability of the small vessels, Med. Gaz. 

 1834-35, No. 29, p. 70. Kaltenbrunner, Magendie's 

 Journ. viii. John Evelyn on the passage of blood 

 from arteries to veins in quadrupeds, Phil. Trans. 

 xxiii. 1702, p. 1177. Molyneux in another volume 

 of the same. Jas. Black, Essay on the capillary 

 circulation, London, 1825. Alisons Outlines of 

 Physiol. Appendix to 2nd edition, 1836. Hunter 

 on the blood and inflammation. Thomson's Lec- 

 tures on inflammation, Edin. 1813. Burns on 



inflammation. Gendrin, Hist. anat. des inflam- 

 mations, Paris, 1825. Reuss, Electrical theory of 

 the capill. circulation, Edin. Med. and Surg. Journ. 

 Meyen, De primis vitae phaenom. et de circulatione 

 sanguinis in parenchymate, Bcrol. 1826. Kruger, 

 Diss. de theoriae physics tubulorum capillar. ad corp. 

 human, applicatione, Halae Magd. 1742. 



Influence of the nerves on the circulation. Trevi- 

 ranus, Vermischte schriften, i. p. 99. Home, 

 Philos. Trans. 1814. Flourens, Action of the spi- 

 nal marrow on the circulation, Ann. d. Sc. Nat. 

 viii. 271. Krimer, Physiolog. Untersuchungen. 

 Leipzig. 1820. Legallois, Exper. sur le principe 

 de la vie, Paris, 1812. W. Philip, Laws of the 

 vital functions. Clift on the heart, Philos. Trans. 

 Bracket, Exper. sur les fonctions des nerfs sym- 

 pathiques, Paris. Milne Edwards Sf Vavasseur, 

 Ann. d. Sc. Nat. vol. ix. p. 329. Influence of the 

 cervical ganglia and their nerves on the action of 

 the heart. 



(Allen Thomson.) 



CIRRHOPODA; Cirripedia; Cirripeds ; 

 (xto? and woD?, cirrus and pes, from the curl- 

 like form which the coiled feet or arms present. 

 Fr. Cirripedes. Ger. Rankenfuesser.') A class 

 of invertebrate animals, composed chiefly of 

 the barnacles and acorn-shells. They are re- 

 lated in some points of structure with the annu- 

 lated or diploneurose animals, particularly with 

 Crustacea ; in other points they resemble Ace- 

 phala (Conchifera). All are marine and fixed. 

 The soft parts are, for the most part, encased 

 in a multivalve shell. The body is somewhat 

 conical in form, tumid, and bent inwards at 

 the oral extremity, tapering towards the oppo- 

 site extremity, where it terminates in a long 

 pointed tube. Placed along the abdominal 

 surface, there are two rows of fleshy lobes, 

 (six on either side,) each having two long 

 horny processes, jointed and ciliated. In some 

 species, these constitute the chief bulk of the 

 whole animal. The head is indistinctly de- 

 nned, and has neither eyes nor tentacles; 

 mouth with lips, and three pairs of horny 

 jaws ; anus at the base of the tubular process. 

 Respiration is effected by branchiae, which, in 

 some species, are filamentary, in others foli- 

 ated. Mantle membranous, sacculated, pro- 

 vided with a slit-like opening for the passage 

 of the arms, &c. Between each two pairs of 

 arms, the abdominal surface is marked by six 

 slight depressions, which may be regarded as 

 an approach towards complete articulation. 



The animals thus characterized have had dif- 

 ferent places assigned to them in the various 

 systematic arrangements of modern zoologists. 

 Cuvier formed of them the sixth and last class 

 of his Mollusca. Lamarck was at one period 

 inclined to place them amongst the Crustacea, 

 but latterly he constituted for them a distinct 

 class, and placed it between Annelida and 

 Conchifera ; still, however, regarding them as 

 more closely allied to Crustacea than to any 

 other class ; " for," as he remarked, " they 

 have the nervous system of Crustacea, they 

 have jaws analogous to those of the animals 

 of that class, and their tentacle-like arms 

 resemble the antennae of the lobsters."* Bur- 



* An. sans Vertebres, v. 377. 

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