QUERIES, ANSWERS, ETC. 
235 
but I cannot discover how the bark bed is supported, and the bark kept from 
falling into the air chamber, for I presume this last is an open space. I cannot 
either well understand the pigeon hole construction of the bricks. I should very 
much like to know it for my own information, and that of my friends here. I 
employ a good many poor persons on my grounds, and in my gardens, and no 
person enjoys horticulture and arboriculture more than I do. I. M. T. 
Answer. —We should recommend our correspondent to allow another four 
feet, and make the whole length of the range forty feet, this will allow four lights 
of vinery, four of pinery, three for the melon pit, and one for propagation. The 
pigeon-hole system will answer the best, and if I. M. T. will have the goodness to 
delay a short time we will illustrate the system further. We would advise to have 
a flue, heated by one fire to go round the whole range, for although this might 
not be much wanted, yet at the time of the fruit ripening, it would be found 
very valuable if the weather should prove wet. To give an uniformity we 
would have the melon pit at one end, and the propagating pit at the other end 
of the range; the pinery and vinery standing in the centre should be made 
somewhat wider than the pits, to allow for a two feet walk inside. In the pinery 
a small pit should be built for the succession pines, and a vine might be trained 
along the back, for early grapes, and vines in pots might also be introduced on 
the edges of the pit, and along the flue. In the vinery a constant succession of 
vines in pots might be brought in, and those for the rafters might either be plan¬ 
ted inside the house, or in a border on the outside, which perhaps would be found 
to answer best, they might be conveyed across the dung pit into the house, by 
means of square boxes, in which the stems might be inclosed, or by taking off 
the upper part exposed at pleasure, these, together with those in pots, introduced 
both in this house and the pinery, would keep up nearly a constant supply of 
grapes throughout the whole year. In our next we will illustrate our meaning 
more fully by an engraving; we would have done so in this but had not the op¬ 
portunity of getting the engraving executed in time for insertion.— Con. 
Roses to Train against a Wall. —Can you tell me which are the best sorts 
of hardy roses to train against a wall? 
Answer. —The following may probably be accounted the best:— 
Blush. Red. 
Rosa ruga, Rosa hyacinthina. 
-Boursoulti, -Lougii, 
-Russeliana, -Grevillii. 
Yellow. White. 
-Bauksiae multiplex. Roxburghi, 
- nivea, 
-multiflora platyphy'lla, 
-noisette, varieties. 
The R. Boursoulti, Roxburghi, hyacinthina, and Grevillii, require a good warm 
situation, or they will not flower to perfection. Conductor. 
