Contents. 



25. Influence of ether upon seeds 



2C. Influence of sodium chloride upon germination 



27. Influence of copper sulphate upon germination 



2S. Epinasty and hyponasty .... 



29. Correlations ........ 



30. Formation of new tissues in healing wounds 



III. Reproduction and Germination. 



31. Nature of reproduction and germination 



32. Germination of spores .... 



33. Germination of pollen cells . 



34. Germination of grains of corn 



35. Germination of seeds of Ricinus . 



36. Germination of peas .... 



37. Germination and propagation of the tomato 



38. Germination of the seeds of the squash . 

 3g. Germination and propagation of Begonia 



40. Germination of seeds of Peltandra Virginica 



41. Sprouting of sweet potatoes . 



42. Propagation by various organs 



IV. Exchange and Movements of Gases and Liquids, 



43. General physical nature of the plant 



44. Osmose .... 



45. Osmose in plant tissues 



46. Structure of an absorbing root 



47. Plasmolysis .... 



48. Turgidity in an osmometer . 



49. Tissue tensions 



50. Wilting .... 



51. Bleeding .... 



52. Amount of liquid exuded in bleeding 



53. Measurement of exudation pressure 



54. Imbibition pressure 



55. Hygroscopic movements 



56. Amount of stretching produced by imbibition and turgidity 



57. Structure of a leaf of a mesophytic plant 



58. Structure of a xerophytic leaf 



