Contents xiii 



PAGE 



Chapter III. The Autonomy of the Individual Organs of 

 THE Protoplasts. 



5. Nucleus and Trophoplast 144 



6. The Vacuoles 150 



7. The Relation Between the Plasmatic Membranes and 



the Granular Plasm 157 



8. The Question of the Autonomy of the Limiting 



Membrane 160 



C. The Functions of the Nuclel 



Chapter I. Fertilization. 



1. Historical Introduction 169 



Chapter II. Fertilization (continued). 



2. The Conjugation of the Zygosporeai 171 



3. Fertilization in Cryptogams 173 



4. Fertilization in Phanerogams 176 



Chapter III. The Transmission of Hereditary Characters 

 FROM THE Nuclei to the Other Organs of the 

 Protoplasts. 



5. The Hypothesis of Transmission 179 



6. Observations on the Influence of the Nucleus in the 



Cell 183 



D. The Hypothesis of Intracellular Pangenesis. 



Chapter I. Pangens in the Nucleus and Cytoplasm. 



1. Introduction 193 



2. All Protoplasm Composed of Pangens 195 



3. Active and Inactive Pangens 199 



4. The Transportation of Pangens 201 



5. Comparison with Darwin's Transportation-Hypothesis 207 



6. The Multiplication of Pangens 212 



Chapter II. Summary 



7. Summary of the Hypothesis of Intracellular Pange- 



nesis 



215 



FERTILIZATION AND HYBRIDIZATION 

 Fertilization and Hybridization 219 



