Volume 1

Text-book of embryology / edited by Walter Heape.

Date:
1914-
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: Text-book of embryology / edited by Walter Heape. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    CONTENTS CHAPTER I INTRODUCTION Scope of Embryology—Growth, maturation, and conjugation of the germ-cells—Sex- chromosomes and their bearing on theories of heredity—Recapitulation theory of development and the evidence in its favour—Embryonic and larval phases of development and their mutual relationship—Factors modifying the course of development . . . . • • • • Page 1 CHAPTER II PRACTICAL H,INTS Methods of preserving embryos—Methods of embedding embryo for section- cutting and of orientating them so that the sections shall be cut in a known direction ........ Page 32 CHAPTER III PORIFERA The development of Sycandra raphanus as a type of the Calcarea: the Blastula, Amphiblastula, and Ascon stages in its develojmient—The development of other sponges {Oscarella, Plakina, Espcria, Spongilla, Glathrina, Lcucosolcnia) — The development of the gemniule of Ephydatia — The ancestral history of sponges ......... Page 37 CHAPTER IV COELENTERATA The development of Tuhularia as a type of the Hydrozoa—The development of the eggs of free-swimming medusae—The development of the gonophore of Tuhnlaria and of the medusa of Podocoryne — Othcv gonopboros — The development of Siplionophora, Narconiedusae, and Trachymedusac—Tlie development of Aurelia as a type of the Scyphozoa—The development of Pclagia—T]\o development of Urticina as a type of tlie Actinozoa—The development of Actinia hcrmudensis— Tlie larvae of Zoanthidao and Cereanthidae—The dcveloinncnt of Alcyonaria—Tlie development of tlic skeleton of Caryophyllia—1\v3. development of Bcriie as a type