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. 1878 Excerpt: ...proved by the researches of Mr. Moseley to be a tracheate insect, for in the young genuine tracheae exist, though they disappear in the adult, or at least have not been discovered. VERMES. I. PLATYELMINTHES. Turbellaria (Vortex, Prostomum, Planaria). Trematoda (Distoma, Monostomum). Cestoda (Taenia, Bothriocephalus). ...
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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. 1878 Excerpt: ...proved by the researches of Mr. Moseley to be a tracheate insect, for in the young genuine tracheae exist, though they disappear in the adult, or at least have not been discovered. VERMES. I. PLATYELMINTHES. Turbellaria (Vortex, Prostomum, Planaria). Trematoda (Distoma, Monostomum). Cestoda (Taenia, Bothriocephalus). Nemertina (Nemertes). II. Nematelminthes. Nematodes (Strongylus, Ascaris). Gordiacea (Gordius, Mermis). III. Chetognathi (Sagitta). IV. Acanthocephali (Echiaorhynchus). V. Rotatoria (Brachionus, Rotifer). VI. Polyzoa (Alcyonella, Flustra, Lepralia). VII. Brachiopoda (Lingula, Terebratulina). VIII. Tunicata (Appendicularia, Ascidia, Pyrosoma, Doliolura, Salpa). IX. Gephybea (Sipunculus). X. Annulata (Hirudo, Balanoglossus, Lurabricus, Serpula, Nereis). To the Platyelminthes belong the Flat Worms, Flukes and Tape Worms. These are flat-bodied ciliated worms without lateral appendages, usually with hooks or suckers. They are usually hermaphroditic. Development of the Turbellaria. These lowest of worms, in which there is no true stomach and intestines, but a simple short blind digestive sac leading from the mouth and pharynx, are known to multiply by fission, the '"' body dividing into two. They also possess ovaries and male glands, and reproduce from eggs. We are not acquainted with the life-history of the Rhabdocoelous forms, such as Vortex, Prostomum, etc., except that we know that they produce eggs and spermatic particles. In Prostomum, an orbic-ular form, the yolk cells are formed in a gland (vitellogene) distinct from the true ovary or germ-forming gland (germogene). As an example of reproduction by fission may be cited the singular Catena quaterna Schmarda, which occurs in fresh water at the Cape of Good Hope. Fig. 131 repre-sents two in...
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Add this copy of Outlines of comparative embryology to cart. $24.07, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2016 by Hansebooks.
Add this copy of Outlines of Comparative Embryology to cart. $50.84, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2011 by Nabu Press.
Add this copy of Outlines of Comparative Embryology to cart. $50.88, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by hansebooks.
