GEEENHOUSES AND CONSBEVATOEIBS. 



11 



found sufficient ; 

 and even these 

 must not be 

 brought into use 

 unless artificial 

 heat is absolutely 

 necessary. Damp- 

 ness in the air 

 during the winter 

 months is far more 

 injurious to green- 

 house plants than 

 a somewhat low 

 temperature; and 

 heat should be 

 applied to the 

 house occasionally 

 during the day- 

 time, in order to 

 dry up any super, 

 abundant mois- 

 ture, always tak- 

 ing the precaution 

 to have plenty of 

 ventilation, both 

 at the top and 



The dimensions 

 of the houses we 

 have described 

 above will be 

 found too small 

 for those intending 



