PROTOPLASM 



PAGE 



JEthalium septicum (Fuligo varians) . . Ill 



Pelomyxa palustris, GreefF . . . .116 



2. On Protoplasmic Structures in the Bacteria and allied 



Organisms . . . . .117 



3. Some Observations on the Streaming Protoplasm of Vege- 



table Cells ...... 122 



4. Observations on some Egg Cells . . . .124 



5. Red Blood Corpuscles of Rana esculenta . . . 127 



6. Observations on some Epithelial Cells . . .131 



7. Peritoneal Cells on the Gut of Branchiobdella astaci, etc. . 136 



8. Liver Cells of Rana esculenta and Lepus cuniculus . 140 



9. Epithelium of the small Intestine of Lepus cuniculus . 142 



10. Pigment Cells of the Parenchyma of Aulastomum gulo . 143 



11. Capillaries from the Spinal Marrow of the Calf . . 143 



12. Connective Tissue Cells between the Nerve Fibres of the 



Ischiadic Nerve of Rana esculenta . . . 144 



13. Ganglion Cells and Nerve Fibres .... 145 



PART II 



GENERAL PART . . . . . . . .157 



A. The Theory of the Net-like or Reticular Structure of Proto- 



plasm . . . . . .159 



B. Summary of Divergent Views . . . . .177 



1. The Theory of the Fibrillar Structure of Protoplasm . 177 



2. The so-called Spherular Theory of Kiinstler . . 184 



3. The so-called Granular Theory of Protoplasm . .191 



4. Attempts to explain the Reticular Structures as Pheno- 



mena of Coagulation or Precipitation . . 201 



The Nature of Colloid Bodies . . . .216 



5. The Structure of Protoplasm is Alveolar or Honeycombed 



(Foam-like) ...... 219 



(a) Aggregate Condition of Protoplasm . . . 220 



(6) Vacuoles ....... 227 



(c) External Surface of the Protoplasm . . . 234 



(d) Alveolar Layer ...... 236 



(e) Cell Membranes, Cuticulse .... 240 

 (/) Radiate Layer of Alveoli round the Nucleus . . 243 



(g) Granular Enclosures in Protoplasm, and Corresponding 



Position of Soot Particles in the Artificial Foams . 244 



(h) Radiate Appearances in Protoplasm during Cell Division 246 



(i) Radiate Appearances in Ova, etc. . . . 251 



(j) Striated Protoplasm of Epithelial Cells . . . 254 



