60 'AVIARIES, BIRD-ROOMS AND CAGES. 



double boarding it, we shall line it with thick felt, which 

 will be lighter and less clumsy. 



PAINTING AND VENTILATING. 



Our building is now ready to paint, and it would 

 be advisable to give it at least two coats before we fix 

 in the glass. When buying the glass it is as well to 

 pay a little more and have it fairly thick; the thickness 

 called "twenty-one ounce'' would do nicely. It is not 

 so likely to get broken, and will keep out the weather 

 better. It should not fit too tightly, or in frosty weather 

 it is liable to crack. Place some easy working putty 



Fig. 30. The completed Outdoor Bird-room. 



round the frame first, and rub the glass down on it 

 tightly, keeping it in place with a few brads. Do not 

 putty over the front of the glass, for where this is done 

 the water gets down behind and rots the woodwork. 

 After the glass is fixed, the whole should have two more 

 coats of paint. When doing the sash-bars the brush 

 should be allowed to run over on to the glass about 

 half an inch all down; this helps to keep the wet out, 

 and stops the putty crumbling. 



