CHAPTER III. 



PAOK 



MANAGEMENT OF THE FORCING-HOUSE ... 49 to 92 



Temperatures for the Various Crops 49 



Soils for Forced Vegetables 50 



The Question of Fertilizers 52 



The Connecticut Experiments with Tomatoes . 53 

 The Connecticut Experiments with Lettuce . . 61 



On the Use of Fresh Stable Manure 62 



Watering 65 



Watering by Sub-irrigation 68 



Construction of Beds and Benches for Sub- 

 irrigation 69 



Experiments with Lettuce and Other Plants . 72 



Conclusions 77 



Ventilating and Shading 78 



The Electric Light for Forcing-houses . . . . 80 



Pollination . Si 



Insects and Diseases 83 



Methods of Controlling Greenhouse Pests by 

 Fumigation 86 to 92 



CHAPTER IV. 



LETTUCE 93 to 107 



Temperature 04 



Light 94 



Beds and Benches . 



o M ... yf 



Soils 



Growing in Pots 99 



Sowing and Transplanting IO i 



A Grower's Remarks I0 2 



Varieties IO4 



Enemies and Diseases IO4 



