[218] Beddard, "Notes upon the Anatomy of a Manatee (Manatus inunguis)," Proc. Zool. Soc. 1897, p. 47.
[219] See Kükenthal in Semon's "Zoolog. Forschungen," Denkschr. Jen. 1897; Langkavel, "Der Dugong," Zool. Garten, 1896, p. 337.
[220] Proc. Zool. Soc. 1892, p. 77.
[221] See van Beneden and Gervais, Ostéographie des Cétacés; and for a more general account Beddard, A Book of Whales, London, Murray, 1900.
[222] Vergleichend-anatomische Untersuchungen an Walthiere, Jena, 1889-93.
[223] "And at his gills draws in, and at his trunk spouts out, a sea," wrote Milton, and think many others.
[224] These have been recorded by Professor Howes in the Porpoise.
[225] For details and literature see Jungklaus; Jen. Zeitschr. xxxii. 1898, p. 1.
[226] In Proc. Zool. Soc. 1886, p. 243.
[227] Perrin, "Notes on the Anatomy of B. rostrata," Proc. Zool. Soc. 1870, p. 805.