XIV. 
mV. 
CONTENTS 
. Introductory Remarks~ - - - = - E 
. Some Remarks on the Morphology of Development - 
. Fertilization and Oxidation - - = S z 
. Hydrolytie Processes in the Germination of Oil- 
containing Seeds - - - = s = - 
. Some Earlier Observations on Natural Partheno- 
genesis in Insects - = = Z iw _ e. 
. On the History of the Earlier Experiments on Artificial 
Parthenogenesis_ - - r “ ef . . 
. The First Experiments upon the Osmotic Activa- 
tion of the Unfertilized Egg of the Sea-Urchin 
(Arbacia) - - - =i) we - - - 
. The Improved Method of Artificial Parthenogenesis 
in the Sea-Urchin Egg - -~ - pe gay a 
The Effect of Artificial Membrane Formation on the 
Pe eeg | Sr ol at ee 
Further Examples of the Prolongation of the Life of 
the Egg by Lack of Oxygen - - = _ Z 
. Further Experiments on the Action of the Hypertonic 
Solution after Membrane Formation  - = = 
. The Effect of the Agencies of Artificial Partheno- 
genesis upon the Oxidations. The Cytological 
Changes in the Parthenogenetic Egg - -~ - 
. The Relative Physiological Efficiency of Various Isos- 
motic Solutions - = = es = = 2: 
Chemical Constitution and Relative Physiological 
Efficiency of Acids - - = = z S 
The Activation of the Unfertilized Egg by Bases’ - 
ix 
127 
133 
147 
