Remarkably fine examples of the adult worm may be seen in the Hunterian Collection, Lincoln’s Inn, and in the Museum of the Royal Veterinary College. The human example is undoubtedly genuine. The dissections in the Hunterian Collection of specimens were made by me in 1865. Objection has been taken to my description of the œsophagus as “spiral.” In Sheldon’s specimen it is certainly twisted upon itself, precisely in the manner in which Davaine has also figured it (‘Traité,’ fig. 68); but I cannot here give further anatomical particulars. Drelincourt found two worms sexually united in the kidney. When once the parasites have gained access to this organ, rapid destruction of the glandular substance follows. Ultimately the kidney is reduced to the condition of a mere cyst or bag, which, besides the worms, contains a quantity of sanguineo-purulent matter. Frequently only one worm is present, but oftener two or three. In the kidney of a puma D’Azara’s friend, Noseda, found no less than six worms, whilst Klein obtained eight from the kidney of a wolf. BIBLIOGRAPHY (No. 28).--_Azara, F. de_, ‘The Natural History of the Quadrupeds of Paraguay,’ trans. from the Spanish by W. P. Hunter; Valpy’s edit., p. 43, 1837; Black’s, 1838; French edit., p. 313, 1801.--_Albers_, ‘Beitr. z. Anat. &c.,’ Bd. i, s. 115.--_Aubinais_, ‘Revue Méd.,’ 1846, p. 284.--_Balbiani_, “Recherches,” &c., ‘Compt. Rend.,’ 1869, p. 1091; ‘Rec. de Méd Vét.,’ 1870, p. 5.--_Bickford_, “Spec. of _Str. gigas_ found in the Kidney of a Dog,” the ‘Veterinarian,’ 1859, p. 312.--_Blainville_, ‘Dict. des Sci. Nat.,’ tab. 29.--_Blanchard_, ‘Ann. des Sci. Nat.,’ 1849, p. 186.--_Idem_, in ‘Cuvier’s Règne Animal’ (Masson’s edit.), ‘Les Intestinaux,’ p. 57, pl. 27.--_Blasius_, ‘Obs., &c.’ (with fig. of Lumbricus in renibus hominis), 1674, p. 125.--_Bobe-Moreau_, in ‘Journ. de Méd.,’ tom. xlvii.--_Boerhaave_, ‘Aphorism.,’ 1728.--_Bremser_ (l. c., Bibl. 2), s. 223.--_Chabert_, ‘Traité des maladies verm. dans les Animaux,’ 1782.--_Chiaje_, ‘Comp. d. Elmintogr. umana,’ p. 106.--_Clamorgan, J. de_, ‘La Chasse de Loup,’ 1583 (quoted by Davaine, the worms being described as “serpents et bêtes fort venemeuses”).--_Cobbold_, ‘Entoz.,’ p. 358.--_Idem_, ‘Catalogue of Entozoa in the Museum of the Roy. Coll. of Surg.,’ “Descr. of preps. Nos. 19-25,” p. 3, 1866.--_Idem_, “Parasites of Man,” ‘Midland Naturalist,’ Dec., 1878.--_Collet-Meygret_, “Mém. sur un ver trouvé dans le rein d’un Chien,” in ‘Journ. de Physique,’ &c., 1802.--_Cuvier_, see _Blanchard_ (supra).--_Idem_, ‘Voyage en Sicile,’ and in ‘Ann. des Sci. Nat.,’ tom. xi.--_Davaine, C._, ‘Traité,’ l. c., deuxième edit., p. 271 _et seq._ (with full lit. refs. at p. 290).--_Diesing_, l. c., vol. ii, p. 325.--_Dujardin_, l. c., p. 113.--_Frank, F._, “Ein Spulwürm in der Urinblase eines Hundes,” ‘Hufeland’s Journ.,’ Bd. xviii, s. 112.--_Jackson_, ‘Catalogue of the Boston Museum,’ 1847, p. 317.--_Klein, T. K._, “Anatomical Description