This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1859 edition. Excerpt: ... of opinion prevails respecting the nature, and indeed the existence, of a third constituent of the fossil, the so-called “pen” or “osselet.” As the part which commonly goes by the name of “pen” in the Belemnite, however, corresponds to only a part of the structure already known as the “ pen ” in recent Cephalopoda, I shall endeavour to avoid ambiguity, by using for it the appellation of pro-ostracum. In a paper F‘ On the " discovery of a new species of Pterodactyle, and “ also of the fiBGGS of the Ichthyosaurus, and of a black substance re“ sembling Sepia or Indian ink, in the Lias of Lyme Regis,” read before the Geological Society, on the 6th February 1829, by Dr. Buckland, the following passage occurs. “ 3. Fossil Sepia.---An indurated black animal substance, like that in the ink-bag of the cuttle fish, occurs in the Lia-s at Lyme Regis; and a drawing made with this fossil pigment, three years ago, was pronounced by an eminent artist to have been tinted with sepia. It is nearly of the colour and consistence of jet, and very fragile, with a bright splintery fracture; its powder is brown, like that of painters’ sepia; it occurs in single masses, nearly of the shape and size of a small gall-bladder, broadest at the base, and gradually contracted towards the neck: these are always surrounded by a thin nacreous case, brilliant 2.s__4116 most vivid Lumachella; the nacre seems to have formed ths--ning of a fibrous, thin, shelly substance, which, together with this nacreous lining, was prolonged into a hollow cone like that of a belemnite, beyond the neck of the ink-bag; close to the base of the ink-bag there is a series of circular transverse plates and narrow...