CONTENTS vii 



MATEKIAL, APPARATUS, AND SUiPPLIES 



Page 



Lists of Preparations for the Microscope 217 



Suggestions on Material for the Study of Plant Histology . . . 220 



Apparatus for the Laboratory 222 



Chemicals for the Laboratory 224 



Dealers in Material, Apparatus, and Supplies 225 



BIBLIOGRAPHY 227 



APPENDIX 233 



GLOSSARY 241 



INDEX 255 



LIST OF EXPERIMENTS 



Page 



I. Temperature and germination 19 



II. Amount of water in seeds 20 



III. Relation of air to germination 21 



rv. Effect of germination on air 21 



V. Use of the pea cotyledons after germination . . . .21 



VI. Relation of food in seed to rate of growth . . . 22 



VII. Occurrence of starch in seeds 24 



Vin. Oil in flaxseed 25 



IX. Proteids in seeds r .26 



X. Plant foods in Brazil nuts 26 



XL Cause of arch of hypocotyl 27 



XII. Discrimination between root and hypocotyl . . . .28 



XIII. Growing region of root .28 



XIV. Percentage of water in the plant body 33 • 



XV. Water cultures 33 



XVI. Root absorption with diminished temperature . . .34 



XVII. Region of bending in the root ... .35 



XVIII. Pressure of root tip 35 



XIX. Cause of downward growth of root . . . .36 



XX. Osmosis 36 



XXI. Osmosis of Begonia leaf 37 



XXII. Course of water in stems .... 45 



XXIII. Relation of loss of water to firmness of tissues . 46 



XXIV. Use of cork 47 



