Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 755
commonly known as mother-of-pearl) of theAvicula or pearl-oyster is carefully examined, it becomes evidentthat the lines are produced by the cropping-out of laminae of shellsituated more or less obliquely to the plane of the surface. Thegreater the clip of these lamina?, the closer will their edges… … Section of nacreous lining of Shell of Avicula margaritacea (Pearl-oyster). present themselves on that space. And thus the appearance of asection of nacre is such as to have been aptly compared by Sir J.Herschel to the surface of a smoothed deal board, in which thewoody layers are cut…
Microscopy · Biology
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