INDEX. 199 



Heat, Production of, in cell, 161, 187 ; produced in spadix of Arum, 187 ; 



produced during germination, 160, 161, 187 ; Loss of, by evaporation 



of water from leaves, 174. 

 Heliotropism, 181. 



Heterosporous ferns, Reproduction in, 118, 144. 

 Heterotypic mitosis, 115. 

 Hilmn, see Starch. 

 Hippuris, epidermis of leaf, 24, 25. 

 Hofmeister, theory of rotation of protoplasm, 11. 

 Holly, epidermis of leaf, 26, 45. 

 Homology, 6, 153 ; see also Table opp. p. 154. 

 Homosporous ferns. Reproduction in, 118, 140. 

 Homotypic mitosis, 115. 

 Huxley, views on constitution of cytoplasm, 186 ; definition of protoplasm, 



7. 

 Hyacinthus, Root-tip of, aa material for study of mitosis, 116. 

 Hyaloplasm, 10. 



Hydrogen, Assimilation of, 157 ; as constituent of protoplasm, 7. 

 Hydropteridise, see Heterosporous ferns. 

 Hydrotropism, 186. 

 Hymenium, of fungi, 146. 

 HyphsB, 88, 146, 147. 

 Hypobasal cell, of Angiosperms, 128 ; of ferns, 143. 



I 



DIOBLASTS, 86. 



Intercellular spaces, 26, 39, 179. 



Interfascicular cambium, 51. 



Intussusception, 44. 



InuUn, in cells of Dahlia, 84 ; in cell-sap, 171 ; as stored food, 176. 



Iodine, as reagent for starch, 16, 17, 164 ; as reagent for proteid, 17 ; a 

 component of sea-weeds, 157, 171 ; as reagent for sclerenchyma 

 and lignin, 71. 



Iron, essential to growth of plant, 157 ; essential for formation of chloro- 

 phyll, 168, 169 ; Perchloride of, as a test for tannin, 86. 



Irritability, 10, 186. 



Isoetes, see Heterosporous ferns. 



Isolated tissues, 78, et seq. 



Isotonic solutions, 17, 173, 191. 



K 



Kabyokinesis, see Mitosis. 

 KataboHsm, 157, 159, 177. 



Kinoplasm, 101 ; Origin of nuclear spindle from, 115. 

 Klinostat, 184. 



Knight, Experiment of, upon influence of centripetal force upon plants, 

 184. 



