x CONTENTS 



CHAPTER VI 

 FRAMEWORK, METHODS OF ERECTING . . 80-96 



Cardinal virtues of a good greenhouse frame- 

 work Foundations and walls Wood-frame 

 houses Semi-iron frame houses All-metal 

 frame houses. 



CHAPTER VII 

 GLAZING AND PAINTING . . . . . 97-120 



Greenhouse glazing an art Glass to use 

 Size of glass Lapped glazing Butted glaz- 

 ing Putty Setting the glass How to esti- 

 mate putty Glazing points Precautions 

 Liquid putty Substitutes for glass Kind of 

 paint Amount of paint required Shading 

 Glazing ladder. 



CHAPTER VIII 

 VENTILATION AND VENTILATING 



MACHINERY 121-141 



Systems of greenhouse ventilation Side 

 ventilation Overhead ventilation Size of 

 ventilators Hanging ventilator sash Venti- 

 lator operating machinery Shafting Shaft 

 hangers Gearing Ventilator arms Capa- 

 city of ventilating apparatus Sliding shaft 

 system. 



CHAPTER IX 

 BEDS, BENCHES AND WALKS . . . . 142-157 



Advantages and disadvantages of benches 

 .Raised beds Wood 'benches Iron frame 

 benches Concrete benches Height and 

 wi'dth of benches Arrangement of benches 

 and walks Walks and curbs. 



CHAPTER X 

 GREENHOUSE HEATING . . . . . 158-166 



The principles of greenhouse heating Heat- 

 ing with flues Hot water vs. steam heating 

 Combination heating systems Heating 

 coils Cast iron and wrought iron pipes for 

 heating. 



CHAPTER XI 

 HOT WATER INSTALLATION . '. ' . . 167-187 



General principles Formula for determin- 

 ing velocity of water in heating systems 

 Estimating radiation Amount of pipe re- 

 quired Size of flow pipe Length of coils 

 Expansion tank Pressure systems. 



