January."] hot-house. 133 



Angle of the glazed Roof. — The pitch of the roof is usually 

 varied to agree with the design of the house, and the size of 

 the plants to be grown therein. Where pleasure and orna- 

 ment arc the principal objects, the angle should be about 33° 

 from the level line ) but a few degrees of inclination either 

 way is of minor importance. 



Maleriah for glazing Sashes. — Carolina pine is the best 

 material for the wood-work, as it is not so subject to decay 

 from moisture and heat as the other kinds of pine wood. 

 The frames or sashes can be of any convenient length, not 

 exceeding ten feet, and about three and a half or four feet 

 wide, and made from plank two inches thick, divided so as 

 they can be glazed with glass six inches wide. 



Of Glazing. — The pieces of glass should not exceed six 

 inches by eight, though six by six is preferable; the lappings 

 about one quarter of an inch. The frames ought to have 

 two coats of paint previous to glazing, and the glass bedded 

 in putty. Some prefer the lappings to be puttied also. It 

 is our opinion that in a hot-house these should not be puttied, 

 but, in the green-house, the closer they can be made the 

 better. 



Of Shutters. — These should be made of three-quarters of 

 an inch white pine, and bound on both ends and sides, having 

 a cross piece in the middle of the same. They ought to be 

 painted at least once in three years. 



HOT-HOUSE. 

 JANUARY. 



At all times, be very careful of the temperature of this 

 department, and more especially at this season of the year, 

 as a few minutes' neglect might materially injure many of 

 the delicate plants. The thermometer ought to range 

 between 55° and 65°. In fine sunshine days, admit a 

 little air by having some of the top sashes let down one, 



