Mrs Marcet (Jane Haldimand), The Heiress in her Minority or the Progress of Character, vol. II, Londres, John Murray, 1850, p. 250« Yes, and it is a different species. Its dwelling is formed of bits of straw, wood, or even stone, cemented together and making a many-sided case. Some of these creatures fasten pieces of rush to each other, side by side, so as to form a nicely fluted cylinder ».