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. 1893 Excerpt: ... of pores; these open into a series of tubules, which collect into an ampulla, and this in its turn opens into the lumen of the stone canal. The stone canal is lined by a ciliated epithelium, surrounded by calcined connective tissue, a ridge projects into its interior, and the free edge of the ridge may bifurcate, each ...
Read More
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. 1893 Excerpt: ... of pores; these open into a series of tubules, which collect into an ampulla, and this in its turn opens into the lumen of the stone canal. The stone canal is lined by a ciliated epithelium, surrounded by calcined connective tissue, a ridge projects into its interior, and the free edge of the ridge may bifurcate, each half then folding back upon itself. The circumoral ring bears nine glandular bodies, composed of branching tubules lined-with cubical cells, and opening into the ring. These bodies are known as Tiedemann's bodies. The stone canal opens in the position where the tenth of these bodies should be. It is possible that the corpuscles which float in the fluid of the water-vascular system are formed in these bodies. The radial vessels which pass along the arms lie ventral to the ambulacral plates, between them and a transverse muscle which runs between each pair (Fig. 131). Opposite each tube-foot the radial vessel gives off a transverse branch. Each branch passes between the ambulacral ossicles, and opens into a vesicular expansion, the ampulla, situated in the coelom. From this another vessel passes to the tube-foot. The contraction of the ampulla forces fluid into the tube-foot, and so extends it. At the tip of the arm the radial tube ends in an unpaired terminal tentacle, at the base of which is a thickening beset with eyes. The tentacle has a very well-developed nervous layer. The blood system described by German authors is founded on misinterpretation. They describe a radial vessel, an oral ring, and an aboral ring, and a connecting heart lying inside the corresponding organs described above. The radial and oral vessels are nothing but the thickened septa of the true vessels, the heart is a solid glandular organ, and the aboral vessel is the ge...
Read Less
Add this copy of Zoology of the Invertebrata: a Text-book for Students to cart. $23.14, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2021 by Legare Street Press.
Add this copy of Zoology of the Invertebrata to cart. $29.02, poor condition, Sold by Anybook rated 4.0 out of 5 stars, ships from Lincoln, UNITED KINGDOM, published 1893 by Adam & Charles Black.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
This is an ex-library book and may have the usual library/used-book markings inside. This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Octavo, bound in green cloth. Gilt lettering on backstrip. Binding is worn and rubbed, corners are bumped. Pages are age toned and text is clear. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 1300grams, ISBN:
Add this copy of Zoology of the Invertebrata: a Text-book for Students to cart. $34.31, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2021 by Legare Street Press.
Add this copy of Zoology of the Invertebrata: a Text-book for Students to cart. $37.76, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2021 by Legare Street Press.
Add this copy of Zoology of the Invertebrata: a Text-book for Students to cart. $47.43, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2021 by Legare Street Press.