CONTENTS. 
Preliminary Remarks 
I. 
The 
Egg before it is laid ..... 
9 
II. 
The 
Fecundation ....... 
10 
III. 
The 
Laying of the Eggs ...... 
• 
11 
IY. 
The 
Laid Egg ....... 
12 
Y. 
The 
Division of the Vitellus ..... 
■ 
13 
YI. 
The 
GtERMINATIVE \ ESICLE AND GrERMlNATIVE SpOT 
15 
VII. 
The 
Clear Space in the Spheres of Division 
• 
15 
VIII. 
The 
Vitelline Substance ..... 
• 
16 
IX. 
Floating Cells ....... 
• 
16 
X. 
The 
Embryo ....... 
• 
17 
XI. 
The 
Embryonic Substance ...... 
• 
20 
XII. 
The 
Larva ........ 
21 
XIII. 
The 
ClIRY'SALIS ....... 
• 
22 
XIV. 
Chronological Sketch ...... 
. . 
23 
XY. 
Recapitulation ....... 
. 
24 
XYI. 
Conclusion ........ 
25 
References to the Figures ....... 27 
