d. Naturhist.-Med. Vereins zu Heidelberg,’ 1864.--_Idem_ (und _Fuchs_), ‘Die Trichinen,’ 1865.--_Perroncito_, “La _Trichina spiralis_” in ‘Italia. Estr. degli Annali R. Accad. d’Agric. di Torino,’ vol. xx, 1877.--_Reyher, O._, ‘Die Trichinenkrankheit,’ Leipzig, 1862.--_Rodet, H._, ‘De la Trichine et de la Trichinose,’ Paris, 1865 (quoted by Davaine).--_Rupprecht, B._, ‘Die Trichinenkrankheit im Spiegel der Hettstedter Endemie betrachtet,’ Hettstedt, 1864.--_Seidel_, ‘Jenaische Zeitschr. f. Med. u. Nat.’ 1864.--_Siebert_, ‘Ueber die Trichinenkrankheit und ihre Vermeidung,’ Jena, 1863.--_Siebold_, art. “Parasiten,” ‘Wagner’s Handwörterbuch,’ 1844.--_Simon, G._, “Eine Trichinen-epidemic in Calbe,” ‘Preussische Medicinal Zeitung,’ 1862.--_Tommasi_, ‘La Trichina spiralis e la Malattia prodotta da esso,’ Torino, 1863.--_Tüngel_, ‘Archiv von Virchow,’ xxvii, 3, 421, 1863 (quoted by Davaine).--_Virchow_, ‘Deutsche Klinik,’ 1859; ‘Comptes Rendus de l’Acad. des Sci.,’ tom. xlix.--_Idem_, ‘Archiv f. Path. Anat. und Physiol.,’ Bd. xviii.--_Idem_, ‘Darstellung der Lehre von den Trichinen’ (fur Laien und Aerzte), 1864.--_Vogel_, ‘Die Trichinenkrankheit,’ 1864.--_Wagner_, “Eine Trichinenepidemie in Leipzig,” ‘Arch. der Heilkunde,’ 1864.--_Wunderlich, C. A._, “Sur la diagnose probable de l’affection trichinale,” ‘Gaz. Méd. de Paris,’ p. 311, 1863; from ‘Wagner’s Archiv der Heilkunde,’ ii, 3, p. 269, Leipzig, 1861 (quoted by Davaine).--_Zenker_, “Zur Lehre von der Trichinenkrankheit,” ‘Deutsches Archiv. für Klin. Med.,’ Bd. viii, s. 387.--_Idem_, ‘Virchow’s Archiv,’ 1855 and 1860. _Trichocephalus dispar_, Rudolphi.--This well-known worm possesses a long filiform neck, occupying about two thirds of the entire length of the body. The surface of the skin though smooth to the naked eye is furnished on one side with a longitudinal band of minute wart-like papillæ. The tail of the male is curved, and emits at the extremity a short, tubular penis-sheath, armed with minute retroverted spines. The tail of the female is straight and bluntly pointed. The eggs measure 1/480″ to 1/447″ in their long diameter. The whipworm infests the cæcum, and also the upper part of the colon. Upwards of one thousand were found by Rudolphi in a woman.