CONTENTS. 
Introduction 
Preparation and scope of the work 
Acknowledgments 
Object and methods of study 
Catalogue of papers of American Early Tertiary Bryozoa 
Synonymic references 
Reference of previously described North American Early Tertiary Bryozoa. 
Geologic tables of Mesozoic and Cenozoic formations 
Subdivisions of European and South American Mesozoic and Cenozoic rocks 
List of Mesozoic and Cenozoic formation names 
List of localities with formations and station numbers 
Lists showing geographic and geologic distribirtion 
Lowest Eocene 
Midwayan bryozoa 
Wilcoxian (Bashi) 
Claibornian bryozoa 
Jacksonian bryozoa . 
Vicksburgian bryozoa 
General description of the bryozoa 
Classification 
Structure of the Cheilostomata 
General consideration of the Cheilostomata 
Endocyst and ectocyst 
Zoarial budding and formation of skeleton 
Olocyst 
Tremocyst 
Tubules 
Pleurocyst 
Septulae and dietellae 
Function of reproduction 
Larva 
Ovieells 
Nonovicelled zooecia 
Nature of the ovieells 
Structure of the ovieells 
Passage of the eggs 
Fixation of the larva 
Hydrostatic functions 
Zooecial hydrostatic relations 
Operculum 
Ascopore 
Hypostege 
Zoarial hydrostatic system : 
Use of the vibracula 
Functions of relation 
Avicularia 
Frontal or immersed avicularia ■ 
Interzooecial avicularia 
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