CONTENTS OF VOLUME I.
Introduction. Pp. [1‑16].
Chapter I. The Ovum and Spermatozoon.
General history of the Ovum, pp. [17‑25]. Special history of the Ovum in different types, pp. [26‑65]. The Spermatozoon, pp. [65‑67].
Chapter II. The Maturation and Impregnation of the Ovum.
Maturation of the Ovum, and formation of the polar bodies, pp. [68‑79]. Impregnation of the Ovum, pp. [79‑86]. Summary, p. [86].
Chapter III. The Segmentation of the Ovum.
Internal phenomena of Segmentation, pp. [88‑92]. External features of Segmentation, pp. [92‑122].
Introduction to Systematic Embryology. Pp. [125‑130].
Chapter IV. Dicyemidæ and Orthonectidæ. Pp. [131‑137].
Chapter V. Porifera. Pp. [138‑151].
Chapter VI. Cœlenterata.
Hydrozoa, pp. [152‑167]. Actinozoa, pp. [167‑173]. Ctenophora, pp. [173‑178]. Summary, etc., pp. [178‑182]. Alternations of generations, pp. [182‑187].
Chapter VII. Platyelminthes.
Turbellaria, pp. [189‑196]. Nemertea, pp. [196‑204]. Trematoda, pp. [205‑210]. Cestoda, pp. [210‑218].
Chapter VIII. Rotifera. Pp. [221‑224].
Chapter IX. Mollusca.
Formation of the layers and larval characters, pp. [225‑273]. Gasteropoda and Pteropoda, pp. [225‑242]. Cephalopoda, pp. [242‑254]. Polyplacophora, pp. [254‑257]. Scaphopoda, pp. [257], 258. Lamellibranchiata, pp. [258‑269]. General review of Molluscan Larvæ, pp. [270‑273]. Development of organs, pp. [273‑288].
Chapter X. Polyzoa.
Entoprocta, pp. [292‑297]. Ectoprocta, pp. [297‑305]. Summary and general considerations, pp. [305‑308].
Chapter XI. Brachiopoda.
Development of the layers, pp. [311‑313]. The history of the larva, pp. [313‑317]. Development of organs, p. [317]. General observations on the affinities of the Brachiopoda, pp. [317], 318.
Chapter XII. Chætopoda.
Formation of the germinal layers, pp. [319‑325]. The larval form, pp. [325‑338]. Formation of organs, pp. [338‑342]. Alternations of generations, pp. 342, 343.
Chapter XIII. Discophora.
Formation of layers, pp. [347‑350]. History of larva, pp. [351‑354].
Chapter XIV. Gephyrea.
Gephyrea nuda, pp. [355‑361]. Gephyrea tubicola, pp. [361‑364]. General considerations, p. [364].
Chapter XV.
Chætognatha, pp. [366‑369]. Myzostomea, pp. [369], 370. Gastrotricha, p. [370].
Chapter XVI.
Nematelminthes, pp. [370‑379]. Acanthocephala, pp. [379‑381].
Chapter XVII. Tracheata.
Prototracheata, pp. [382‑387]. Myriapoda, pp. [387‑395]. Insecta, pp. [395‑429]. Embryonic membranes and the formation of the layers, pp. [400‑406]. Formation of the organs, pp. [406‑417]. Special types of larvæ, pp. [417‑419]. Metamorphosis and heterogamy, pp. [420‑429]. Arachnida, pp. [431‑455]. Formation of the layers and general development, pp. [431‑446]. Formation of the organs, pp. [446‑455]. Formation of the layers and embryonic envelopes in the Tracheata, pp. [456‑458].
History of larval forms, pp. [459‑511]. Branchiopoda, pp. [459‑465]. Malacostraca, pp. [465‑487]. Copepoda, pp. [487‑492]. Cirripedia, pp. [492‑500]. Ostracoda, pp. [500‑502]. Phylogeny of the Crustacea, pp. [502‑511]. The formation of the germinal layers, pp. [511‑521]. Comparative development of organs, pp. [521‑529].
Chapter XIX.
Pœcilopoda, pp. [534‑538]. Pycnogonida, pp. [538], 539. Pentastomida, pp. [539‑541]. Tardigrada, p. [541]. Summary of Arthropodan Development, pp. [541‑543].
Chapter XX. Echinodermata.
Development of the germinal layers, pp. [544‑553]. Development of the larval appendages and metamorphosis, pp. [553‑573]. Summary and general considerations, pp. [573‑576].
Chapter XXI. Enteropneusta. Pp. [579‑583].
Index. Pp. [584‑590].
Appendix.