INDEX. 197 



E 



Ectoplasm, in Amoeba, 7, 8 ; in Aethalium, 8 ; in enclosed protoplasts, 9, 



32 ; Functions of, 32, 172, 173, 190, 191 ; Structure of, 7 ; of Sphjerella, 



97. 

 Egg-cell, see Oosphere. 



Elaboration of sap, 164, 165, 167, 169, 176, 177. 

 Elaioplasts, 160. 

 Electric currents. Action of, upon protoplasm, 188 ; Production of, in cells, 



187. 

 Embryo, Formation of, in Angiosperms, 128 ; in ferns, 143, 144 ; in Gymno- 



sperms, 137 ; Octant-formation in, 128, 137. 

 Embryo-sac, see JIacrospore. 

 Emergence, 32 ; Glandular, 32. 

 Emulsin, Action of, upon amygdalin, 171. 

 Endodermis, 3, 48, 76. 



Endogenous, in connection with spore-formation, 89, 147. 

 Endoplasm, Structure of, 7 ; Motility of, 8, 9, 15. 

 Endosperm, Formation ofj 128. 

 Endospores, 146. 



Endothelial layer, of resin-canals, 80 ; of glands, 79. 

 End-stages, see Mitosis and Telophase. 



Engelmann, Experiments of, on value of red rays in metabolism, 182. 

 Energy, Sources of, to cell, 160 ; Conservation of, 156 ; Conversion of, 



into other forms, 160, 166. 

 Enzymes, Occurrence of, in plants, i!4, 74, 113, 127, 158, 159, 171, 177 ; 



Varieties of, 158, 171. 

 Eosin, Use of, as stain for caUose, 60, 62. 

 Epibasal cell, 128, 137, 143. 

 Epidermis, Origin of, 23, 24 ; Details of, 24, 2.3, 26 ; Structures observed 



in connection with, 26, et seq. ; Functions of, 4, 2(j, id seq. 

 Epinasty, 185. 

 Epistrophe, 182. 

 Equatorial stage, see Mitosis. 

 Equisetum, ProthaUia of, 145. 

 Etiolin, 167, 169. 



Euphorbia, Latioiferous vessels of, 86. 

 Eurotium, Reproduction in, 147. 

 Excretions, as bye-products of metabolism, 83, 84, 159, 172 ; of formic 



acid, 33. 

 Exogenous, in connection with spore-formation, 89. 

 Exothermic reactions, 160, 161. 

 Extine, 121, 132. 



Fahinose, 164. 



Fascicular cambium, -57. 



Fats, Formation of, in cell, 159, 160 ; Storage of, 176. 



Ferments, see Enzymes. 



Ferns, Scalariform vessels in, 66, 67 ; Reproduction in, 139, et seq. 



