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Show 1897.] SAVIGNY'S ' DESCRIPTION D E L'EGYPTE.' 287 " M. Isidore Geoffroy, son fils, vient de donner de ces descriptions une redaction generale qui le presente avec ordre et clarte." It seems, therefore, that 1 8 2 7 also is the correct date for this part of the Fishes. VOL. I., part 2, Ascidiens by J. C. Savigny, pp. 1-58. The date of this part i3 of no consequence, as all the specific names were issued by Savigny in 1816. VOL. I., part 3, Annelids by J. C. Savigny, pp. 1-128. This was reviewed in the Gott. gelehr. Anz. (1827, p. 695). Engelmann, Bibl. Hist. Nat. p. 550, gives the date as 1820, but the review quoted above leaves little doubt that 1 8 2 2 is the correct date. V O L . I., part 4, Explication des Planches by V. Audouin. These consist of Mollusca (pp. 7-56), Annelids (57-76), Crustacea (77-98), Arachnids (99-186), Insects (187-202), Echinoderms (203-212), Zoophytes (213-214), Ascldlaas (215-224), Polypes (225-244), Oiseaux (251-318). Engelmann, Bibl. Hist. Nat. p. 340, says that the Moll., Ann., Crust., Arach., Ins., Echin., and Ascid. were issued as fo. Paris, 1826. On p. 550 he says the descriptions of the Arachnida appeared fo. Paris, 1812; a statement quite inexplicable to m e and considered by me as a mistake. F. S. Leuckart,' Breves Anim. quorumdam,' 1828, p. 15, refers to the plates of the Gasteropoda as 1812 ; and it may be that Engelmann's reference refers to the plates, and not the descriptions, of the Arachnida. At the beginning of part 4 of Vol. I. there is a letter dated 19 Mars 1825, stating that the work of finishing had been entrusted to V. Audouin on account of the ill-health of Savigny. This is conclusive. See also Ann. Soc. Entom. France, xi., 1842, p. 99, where it is definitely stated that in 1826 the Government selected Audouin to give the descriptions to the plates of Mollusca and articulated animals. Dr. John Anderson tells me that he has ascertained that Savigny's sight failed him1, and that no manuscripts of any kind were handed over to Audouin, so that Audouin had to begin de novo. In the Beprint of the Oiseaux by the Willughby Society, the editor comes to the conclusion that it was published " not earlier than 1826." In the 8vo edition of Savigny's ' Egypte,' the portion of the Natural History under consideration occupies vols. xxii. 1827, and xxiii. 1828. Ferussac, Bull. Scl. Nat. xix., 1829, p. 336, and xx., 1830, pp. 147 & 319, may be consulted with advantage. I have no doubt myself that all the parts enumerated above may be safely regarded as dated 1 8 2 6. V O L . II. Mammlferes by Geoffroy, pp. 99-144. This is reviewed 1 F. Caillaud, Yoy. a Meroe, iv. 1827, p. 271. |