'214 GENERAL FORCING HOUSE. 



quired, and that only of nights principally, or 

 occasionally of cold mornings, or sometimes 

 throughout the day in very severe weather ; but 

 in a mild season, this will only be necessary of 

 evenings, till nine or ten o'clock. Where heated 

 with fire or hot water alone, it will be required 

 to be continued every evening and morning, and 

 moderately all day in cold weather, to support 

 a regular heat. 



DESCRIPTION OF A GENERAL FORCING HOUSE. 



Par. 27. A hothouse intended for a general 

 forcing house should certainly, if possible, be 

 built facing the south, or as nearly so as the 

 situation will permit, constructed in the same 

 form as described for pines, in the first paragraph. 

 The dimensions must entirely depend upon cir- 

 cumstances : the back wall may be eight, ten, or 

 twelve feet high, the upright glasses in front 

 four, five, or six feet high, to be in proportion to 

 the back wall ; the width from ten, twelve, fifteen 

 to twenty feet, and the length to any extent that 

 may be required, from ten to one hundred feet 

 or more! This must entirely depend on circum- 



