12 6 AURICULA. 
the whole length on one fide : three of 
the notched flakes will be fufficient to 
fupport one of thefe fhutters; of courfe, 
fifteen flakes at proper diftances will com¬ 
pletely anfwer the purpofe on one fide: 
the notches are to be cut in the form of aV, 
two inches deep, and three inches wide at 
the top, which will give room for the fhut¬ 
ters to move backwards and forwards with¬ 
out difficulty or danger of flipping out. 
Roth fides are thus to be provided 
with flakes and fhutters, the upper 
edges of the latter fhould meet over 
the centre of the platform, when the 
plants require to be covered with them, 
in the form of the ridge or roof of a 
houfe, well fitted and Hoping equally 
on both fides, fo as to throw off rain, 
without even admitting it to drip 
through upon the plants in any part. 
It 
