A manual of the Mollusca, or, A rudimentary treatise of recent and fossil shells . Fig. 35. Nautilus. Fig. 36. Clymenia. Fig. 37. riiint-^.^ The air-chambers of the recent nautilus are lined by a very thin, li\aDgmermbrane; those of the fossil orthocerata retain indications of a thick vascu-lar lining, connected vd\h. the animal by spaces between the beads of thesiphuncle. t The bodij-chamher is always very capacious; in the recent nautilus itscavity is twice as large as the whole series of air-cells ; in the goniatite (), it occupies a whole whirl, and has a considerable lateral extensi
A manual of the Mollusca, or, A rudimentary treatise of recent and fossil shells . Fig. 35. Nautilus. Fig. 36. Clymenia. Fig. 37. riiint-^.^ The air-chambers of the recent nautilus are lined by a very thin, li\aDgmermbrane; those of the fossil orthocerata retain indications of a thick vascu-lar lining, connected vd\h. the animal by spaces between the beads of thesiphuncle. t The bodij-chamher is always very capacious; in the recent nautilus itscavity is twice as large as the whole series of air-cells ; in the goniatite (), it occupies a whole whirl, and has a considerable lateral extension; andin ammonites communis it occupies more than a whirl.
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectmollusks, bookyear185
