Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 752
be convenientlystudied in the shell of Pinna, in which it commonly projects beyondthe inner, and there often forms lamina; sufficiently thin andtransparent to exhibit its general characters without any artificinlreduction. If a small portion of such a lamina be examined witha low magnifying power… … Section of Shell of Pinna, token transversely tothe direction of its prisms. eye, but which, when examined under the Microscope with reflectedlight, resembles that of an assemblage of segments of basalticcolumns (Fig. 438, p). This outer layer is thus seen to be com-posed of a vast number of…
Microscopy · Biology
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