INDEX. 



193 



Schultze, Max, 23. 



Schwann, 48. 



Sclerotic parenchyma, 72, 77. 



Sclerotic prescnchyma, 72, 77. 



Segmentation, 51. 



Segmentation-nucleus, 146. 



Seminal receptacles, 145. 



Seminal vesicle, 143. 



Sensation. 124. 



Senses of earthworm, 118, 140. 



Sensitive system, 140. 



Serial symmetry, 121. 



Setae, 122, 135. 



Setigcrous glands, 135. 



Sexual organs of animal, 143, 144. 



of plant, 94. 

 Sieve-tubes, 74, 75, 78. 

 ^Sociology, 8, 9. 

 Somatopleure, 150, 151. 

 Somites, 120. 

 Species, 173, 174. 

 Spencer. Herbert, 4, 5, 104. 

 Spermaries, 142, 143. 

 Spermatozoa, 142. 

 Spermatozoid, 96. 

 Sperm-ducts, 144. 

 Spider-wort, 29. 

 Spirogym, 42. 

 Splanchnopleure, 151. 

 Sporangia, 89, 90, 92. 

 Spores, 89, 92-94. 

 Sporophore, 89. 

 Starch, 38, 44. 



digestion of, 163. 

 manufacture of, 106, 166. 

 reserve, 108. 

 Star-fish, 48. 

 Stimulus, nervous, 138. 

 Stipe, 68. 



Stomach-intestine, 127, 

 Stomata, 86. 

 Stomodaeum, 151. 

 Stonewort, 24, 28. 

 13 



Sugar, 38. 



relation to starch, 107. 

 Suminski, 96. 



Survival of the fittest, 104. 

 Syncytium, 59. 

 Systems of tissues, 72. 



Taxonomy, 8. 

 Temperature, 39, 45. 

 Testes, 142. 

 Tetanus, 41. 

 Tissues, 13, 15. 



differentiation of, 100. 



of the animal, 155. 



of the plant, 74. 

 Tracheae, 134. 

 Tracheids, 74, 75, 79. 

 Tmdescantia, 42. 

 Transpiration, 105, 110. 

 Trommer's test, 44, 45. 

 Typhlosole, 127. 

 Typical cell 49. 



Urea, 133, 164. 



energy in, 165. 

 Urtica, 29. 



Vacuolc, 12, 28, 63. 



Vcdlisneria, 29. 



Vaucheria, 42. 



Veins, 87. 



Venation, 87. 



Vessels, 74, 75, 79. 



Vital force, 34, 107, 164, 166. 



Vitelline membrane, 142. 



Vitellus, 142. 



Von Mohl, 23. 



Wood, 11, 16. 

 Wood-parenchyma, 75, 80. 



Xanthoproteic reaction, 43= 



Yeast, 43. 

 Zoology, 7, 8. 



