WITH THEIR MANAGEMENT. 267 



every day more or less as the weather will per- 

 mit, by raising the glasses behind, from a mere 

 crack to a quarter of an inch, an inch or more, 

 in proportion to the heat of the bed arid external 

 atmosphere ; shutting close when extremely cold, 

 but in moderate weather shut by degrees. Should 

 there be a great steam and strong heat, which 

 is sometimes the case in the early part after the 

 bed is made, a small portion of air may be 

 admitted during the night, to give vent to the 

 rank steam, covering the aperture with a garden 

 mat, hanging over it from the top of the glasses. 

 This same precaution may be observed in de- 

 fending the bed in the day time, when the steam 

 and heat may render it necessary to admit fresh 

 air, in exceeding cold weather. 



When the heat of the bed has become mo- 

 derate, keep the glasses close at night, but give 

 air in favourable weather daily. Cover the 

 glasses every evening about sun-set with garden 

 mats, one, two, or three thick, according to the 

 heat of the bed, uncovering in the morning, and 

 when the earth appears dry, give light waterings; 

 and be sure in the early stage of the bed to 



N 2 



