PhANT-HOUSES. 

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and at the other to a roller, the whole length of the pit ; by which the mats 

 are readily run down over the lights, and kept down without any fastening by 



Ma 



the weight of the rollers. They are also useful for shading, luiless the rough 

 glass is used in glazing, in which case uo shading is required. This house 

 is very suitable for heaths. 



