147 
On Glazing for 1 lot-House Roofs. 
The soil of my borders is a strong loam, eighteen inches deep. I ma¬ 
nure the border well every spring, before planting, and at the same time 
add about an equal part of good fresh soil. In this they flower most 
profusely, particularly the plants raised from cuttings;—these do not 
grow so vigorous as the plants with old roots, but they flower far more 
abundant and compact. 
The plan of training the plants to a fence, appears to me to be the 
best mode of securing them, for when tied up to stakes, the wind fre¬ 
quently twists the plants and destroys their tops, but the other mode 
secures them against all winds, and exhibits the flowers to the greatest 
advantage ; three or four stakes placed angularly round the plant, and 
the plant tied to them, also answers the purpose. 
When the blooming season is near its close, I lay about four inches 
thick of rotten bark or leaf soil, over the roots and for two feet round 
the stem of each plant; this is done to prevent the crown of the plant 
being damaged by sharp and sudden frosts. I have seen many Dahlias 
that were exposed, have the crowns so injured by sudden frost, as not to 
push at all the following spring, although the remainder of the root was 
sound. 
When I take up my roots, I do it on a dry windy day, if possible, sha¬ 
king off’ the soil carefully, so as not to twist the roots. I have them re¬ 
moved to an airy situation in a shed, or mushroom-house ; there placed 
singly over the floor or shelves, till the soil remaining on the roots is dry. 
When perfectly dry, 1 lay them on shelves, secure from damp or frost, 
and cover them with dry sifted tan, manure from a mushroom-bed, or 
some material of this kind ; in this way, they will keep perfectly sound 
and fresh. Care must be taken, that whatever is used for covering with, 
be completely diy. 
Joseph Harrison. 
Article IT .—On Glazing for Hot-Home RooJ's^ S$c. By 
Mr. Saul, Pomological-Garden, near Lancaster. 
Gentlemen, 
In your first number you request the attention of practical 
men, to the subject of hot-house roofs, &c., and I am inclined to think, 
that great advantage might be derived from your Horticultural Register, 
if conducted in a similar manner to the Mechanic’s Magazine, by the 
Gardeners coming forward, and giving the different modes and improve¬ 
ments, that occur to them during the different seasons, which would be 
the means of inducing others, in different parts of the country, to follow 
their example, by publishing their own plans and opinions, on the same 
subject. 
