THE GREEN-HOUSE AND CONSERVATORY. 17 



in the end. Use only the best materials, and these of 

 the most durable kind. Remember that the alternations 

 of temperature, and the constant moisture, speedily affect 

 the best timber, and that poor material is sure to be soon 

 rendered useless by dampness and decay. 



But, as many are not able to build expensive structures, 

 we propose to give a number of plans for buildings, of 

 various cost. 



Let us first, however, thoroughly understand the sub- 

 ject, and find out what we need. 



There are many glass structures, all indiscriminately 

 called " green-houses." In common parlance, any glass 

 house for the growth of plants is a green-house ; but, hor- 

 ticulturally, there are different names for structures of 

 different forms, and adapted for different purposes. What, 

 then, is the difference between a hot-house and a stove ? 

 a green-house and a hot-house ? a conservatory and a 

 green-house ? 



A Stove is a plant house, constructed with reference to 

 obtaining a great degree of heat, where the temperature 

 should never fall below seventy degrees Fahrenheit, and 

 may rise even to one hundred and twenty degrees. The 

 atmosphere is kept moist by constant evaporation of water, 

 2* 



