Cope j p (11 Ergebnisse)

ex lib, minimal markings, 253pp, VG+(sl bruised corners, v sl bumped spine foot & lower board edge, v sl rubbed, v sl browned ep's).

Zustand: New. KlappentextrnrnUnlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketc.

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. Book contains pen & pencil markings. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,500grams, ISBN.…

Examples of the ocular, digestive gland and brachial end-organ photophores of specimens from all 13 cranchiid genera are described. The cranchiine and taoniine subgroups have different ocular photophore morphologies, but very similar brachial end-organs in adult females. Most taoniines have ocular photophores that contain large numbers of crystalloids, but these are lacking in Helicocranchia and Sandalops. There are no crystalloids in cranchiine ocular photophores, in taoniine digestive gland photophores (Megalocranchia) or in the brachial end-organs of both groups. The cranchiine Leachia atlantica uniquely has one group of photocytes that contain aggregates with some similarities to the taoniine crystalloids. The end-organs of mature females have a glandular structure; the deciduous photocytes are structurally different from those present in the ocular or digestive gland photophores. The reflectors of Sandalops and Megalocranchia contain unusual arrangements of iridosomal platelets. End-organs lack any reflective structures. The comparative anatomy of the photophores supports the separation of the cranchiine and taoniine groups but the ultrastructural detail provides common links between the two. 18 pp., 10 figs, 4.…

Females and juveniles of Selenoteuthis scintillans have photophores of several structural types, distributed on the tentacles and eyeballs, and within the mantle cavity and tail. Three distinct photophore types can be recognized on the basis of their accessory structures, though their photocytes are identical. The tail and some tentacular photophores (Type 1) lack any accessory optical structures; other tentacular and abdominal photophores (Type 2) have collagenous diffusing fibres; the anal and ocular photophores (Type 3) have a variety of iridosomes but no collagen. The distal tentacular organ is a double structure composed of a unit each of Type 1 and Type 2. Ocular photophores 1 and 5 are also double structures, composed of two Type 3 units. The photophores closely resemble in structure those of Lycoteuthis diadema. The photocytes have a marked fluorescence and luminesce on treatment with dilute hydrogen peroxide. The bio-luminescence intensity of the tail organ may be modified by chromatophore movements and has a blue-green spectral emission. The photophores of juvenile Lampadioteuthis megaleia are similar in structure to those of Selenoteuthis but somewhat less complex. A comparison between the morphology of the photophores of lycoteuthid and enoploteuthid squids emphasizes the close similarity between the two families. At the ultrastructural level, certain photophores of both families have very characteristic microvillous blood vessels associated with the photocytes. 23 pp., 3 figs, 11 pls, gr. 8.…

Hardcover. Zustand: Fine. No Jacket. 1st Edition. Folio, (i-vii), 153 pp, folding Key to Palaeogeographical Maps, coloured maps throughout. Laminated boards (no dust wrapper was issued), a fine copy.

Hardback. Zustand: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

Hardcover. Zustand: Good. Cover shows moderate signs of use, with a few marks and bumps. Internally clean and fresh, with uncreased pages. Previous owner's name on first inside page. Sound and serviceable overall. Publisher's note: This atlas traces the palaeogeographical evolution of the British Isles and surrounding areas from late Precambrian times through to the present day. It will be of interest to earth scientists throughout the world. Size: 30.2 x 21.3 x 1.2 cm. xi, 153 pp. Shipped Weight: Under 1 kilo. Category: Science & Technology; Historical geology; Maps, charts & atlases; British Isles; ISBN: 186239055X. ISBN/EAN: 9781862390553. Add. Inventory No: 250610MMY0855902.…

Hardcover. Zustand: Very Good. No Jacket. Five volumes (complete). Bound copies of "The Forum", complete series for the first year and a bit of the magazine's publication. The first volumes is bound in half leather. The leather corners and spine are much worn, scuffed, marked. The boards are much worn and marked from storage. Despite their shabbiness, the boards and spine are confident and sound. The other volumes are bound in red cloth covered boards. These too have wear about the edges, corners and faces from shelving, storage. They too are sound and sure. The magazines themselves are in excellent condition. Even now the contents are utterly engaging and relatable. The opinion, news and gossip-cum-anecdotes are enthralling with their immediacy. The pages are fresh, new, clean, clear, consistently confident, neat, tight, certain, much more than competent. Please note that due to the weight of the set, should the books need be posted to the outside of South Africa extra postal charges may be required. fk. Our orders are shipped using tracked courier delivery services.…

203 p., numerous figures & plates, small 4to, paperbound. Special Papers in Palaeontology. Ex library Steve Donovan (with his name written unobtrusively on title-page).

203 p., num. figs & pls, paperbound. Special Papers in Palaeontology.