150 
THE ERICA. 
the back of the foliage, which will destroy every leaf on the plant, 
supposing it to continue in a damp, humid atmosphere. 
The free growing Ericas delight to be out in the open air, on 
a cool bottom, during the summer months, hut the hard-wooded 
species and varieties, in my opinion, ought never to be out for 
any length of time, unless in a very sheltered situation; but^ at 
the same time, to let them remain in a greenhouse during the 
three hot months of June, July, and August would be absurd. 
I would recommend, from experience, that small plants of this 
class be kept in frames all the summer, but then the frames 
should be turned to the north, and elevated on pots or bricks, so 
as to allow a current of free air to pass under the frame to the 
plants; by this method you can put on the lights to keep the 
heavy rains from them, which are very injurious, and likewise can 
shade them with mats, or, what is still better, canvass. Although 
I recommend the exclusion of heavy rains, I consider they enjoy 
a refreshing shower the same as other plants, but the before- 
mentioned plan is to guard against a wet season. Perhaps some 
of you will say, how can we do this with our large show-plants, 
which take two men to lift them ? In this case, erect a temporary 
structure, with feather-edged boards for the sides, and oiled 
calico for the roof, only leaving room for the air to enter at the 
bottom. In fine weather, of course, I need not tell you to always 
have the roof off, or, as an improvement for the sides, have it 
made with hinges, so as to let it down at pleasure, and fix it with 
a button. 
In the next place, I will say- a few words respecting the soil, 
which is of course one of the principal agents. I have never 
found better, than the best that is procured from Shirley or 
Addington Parks, although there is very good at Wimbledon 
Common. In selecting it, be particular in choosing that nearest 
the surface, and the nearer it approaches the colour of Scotch 
snuff the better, particularly for young plants; this light soil 
will require to be incorporated with a great portion of silver 
sand, that from Reigate I prefer, being very pure and sharp ; at 
a rough calculation I should say a peck of sand to a barrowful of 
peat. I prefer sifting the soil for small plants, hut never sift it 
for heavy potting, nor use quite so much silver sand. I would 
