CONTENTS 
Introduction, ------------ 
Paper No I. An Early Ovum imbedded in the Decidua, 
History of the Specimen, - -- -- -- -- 
Fixation of the Specimen, - -- -- -- -- 
Dimensions of the Ovum, --------- 
General Descriptions of the Sections, ------- 
The Decidua, ----------- 
The Trophoblast, ------ - - - - 
The Plasmodi-trophoblast, ------- 
The Cyto-trophoblast, 
Layer of Large Free Cells, - -- -- -- - 
The Contents of the Blastocyst, ------- 
The Mesoblast, ---------- 
The Embryonic Rudiment, ------- 
Discussion of Data, - -- -- -- -- - 
Summary of Characters of the Ovum, - 
Comparison with the Ova of Leopold and Peters, - 
The Embryonic Rudiment, - -- -- -- - 
The Process of Imbedding, ------- 
Comparative Data regarding Imbedding, - 
Description of Imbedding of Human Ovum, - 
Analogy with Imbedding of an Embolus of Chorion-epithelioma, 
Function of the Plasmodium, ------- 
Fate of Early Plasmodium and Attachment of Ovum, 
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