188 



GREENHOUSE PLANTS. 



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In beating Bucli 

 a structure as that 

 Ave have here re- 

 commended, two 

 rows of pipes for 

 hot water will be 

 found suflScient ; 

 and even these 

 must not be 

 brought into use 

 unless artificial 

 heat is absolutely 

 necessary, for too 

 much warmth in 

 winter is very apt 

 to cause such 

 plants as Ericas, 

 and, indeed, many 

 others, to start 

 prematurely into 

 growth, to the 

 total ruin of their 

 flowering. 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- 



