ILLUSTRATIONS 



I. Tomato Seedlings 22 



II. Fruiting Tomato Branch 23 



III. Starved Cabbage Plants 54 



IV. Whip Graft 55 



V. Length of Day Effect 86 



VI. Grass Improved with Fertilizer 87 



VII. Mendel's Garden 118 



VIII. Methods of Applying Colchicine 119 



IX. Colchicine Treatment of Plants 118 



X. Rooting Holly Cuttings 119 



XL Buckwheat with Salt Deficiencies 150 



XII. Cowpeas with Salt Deficiencies 151 



XIII. Grass Treated with Fertilizers 150 



XIV. Hydroponics 151 



XV. Influence of Light on Growing Seedlings 182 



XVI. Influence of Moisture on Growth 183 



