18 THE GREEN-HOUSE AND CONSERVATORY. 



and external air, when admitted, is tempered by passing 

 over heated surfaces, lest the tender plant receive a chill. 

 In this building are grown plants natives of the equator, 

 and the East Indian orchids. It is often arranged so as to 

 afford bottom heat, without which many of these plants do 

 not succeed. 



The term Hot-house, properly speaking, is synonymous 

 with stove : it "is, however, used to designate any building 

 in which artificial heat is used ; a hot-house, or stove, being 

 a house in which such a high temperature is maintained. 



A Green-house is a glass structure, where the tempera- 

 ture ranges from forty to seventy degrees, -and is calculated 

 for the growth of those plants which will not bear the cold 

 of our winters without injury. The term is, however, 

 improperly and indiscriminately applied to any glass struc- 

 ture, either with or without fire heat. 



The term " conservatory" is used properly to designate a 

 show house, where the temperature ranges from forty to 

 sixty degrees, and into which plants are removed, when 

 coming into bloom, from the other houses. It is improperly 

 applied, however, to any glass structure in which plants 

 and flowers are grown. 



The glass structures connected with parlors are also 



