Image from page 120 of “Illustrations of the conchology of Great Britain and Ireland” (1827)
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Title: Illustrations of the conchology of Great Britain and Ireland
Year: 1827 (1820s)
Authors: Brown, Thomas, 1785-1862
Publisher: Edinburgh : W.H. Lizars and D. Lizars London : S. Highley
Contributing Library: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
Digitizing Sponsor: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
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Text Appearing After Image:
hy taf<^Bra\ £tUfravMtl by WJlJAxajs E-lini,,r„U PLATE XXVI. Fig. 1. UNIO ELONGATE. Unio elongata, Lam. Si/st. vi. partie 1, p. 70- Mya margaritifera, Mont. Test. Brit. p. 33.—Brown in Ency. Brit. vi. p. 405. This shell yields mother-of-pearl, and produces pearls, sometimes of considerable size and value. The river Con-way, in Wales, was formerly famous on account of the large and valuable pearls produced by the Unio elongatainhabiting it: as was also the river Irt in Cumberland, so much so, that we are informed by Camden that SirJohn Hawkins obtained a patent for fishing them in that river. In the Scottish rivers this shell is still occasion-ally fished for the sake of the included pearls; and it is said that the pearls which decorate the Scottish crownare native ones, and chiefly from the river Tay. For an account of the Formation of Pearls, see Encyclopedia Britannica, Vol. VI. Article Conchology, page 481. Fig. 2. UNIO piCTOKUM. Unio pictorum, Browns MSS. Mya pictorum, Mon
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