Studies On The Comparative Anatomy Of Sponges (1888) (Paperback)

Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: lacunse, to be less primitive than the canalicular type, in which the chambers are provided with special canaliculi. There is not sufficient evidence at present to show whether or not this is the case, but I think it not impossible that it may be so. EXPLANATION OF PLATE XLII. Illustrating Mr. A. Dendy's paper " Studies on the Comparative Anatomy of Sponges. I. On the Genera Ridleia, n. gen., and Quasillina, Norman." Figs. 1?7.?Ridleia oviformis. Fig. 1. Entire Sponge, X 2. o. Osculum. a a. Flattened surfaces, by which the Sponge has probably been attached to pebbles. Fig. 2. Longitudinal section, taken at right angles to the surface shown in Fig. 1, X 5. o. Osculum, leading into oscular tube; the black line indicates tbe distribution of the fibrous tissue. (The figure is rather diagrammatic; the canals radiating towards the centre are exaggerated.) Fig. -A. Portion of transverse section, X 44. ect. Ectosome. ch. choano some. p. Fore, leading into slit-like subdermal cavity. e. c. Exhalant canals converging towards the centre of the Sponge. /./. Layer of longitudinal fibres cut across. e.f. Layer of circular fibres. sp. ti. Bundles of small spicules projecting at surface. /. sp. Longitudinal bundles of spicules cut across. i. sp. Oblique fibres of spicules within the choanosome cut across. (A little diagrammatic.) Figs. 4 and 5. Two of the larger tylostyli X 190. Fig. 6. One of the small tylostyli X 500. Fig. 7. Diagram of diplodal canalicular canal system, as it occurs in Ridleia oviformis, X 190. i.e. Inhalant canal, giving off narrow caualiculi to/, c., the flagellated chambers, which communicate again by narrow canaliculi with e. e., an exhalaut canal. Figs. 8?12.?Quasillina brevis. Fig. 8. Entire Sponge attached to a pebble, nat. size. (After Ri...

General

Imprint:	Kessinger Publishing Co
Country of origin:	United States
Release date:	November 2009
First published:	November 2009
Authors:	Arthur Dendy
Dimensions:	235 x 191 x 15mm (L x W x T)
Format:	Paperback - Trade
Pages:	274
ISBN-13:	978-1-120-71685-9
Categories:	Books > Language & Literature > Literature: texts > Collections & anthologies of various literary forms
LSN:	1-120-71685-3
Barcode:	9781120716859

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