Are dwarf Apple trees on Paradise stocks healthy and hardy as the same kinds grafted on common seedlings? I refer to blight, winter killing, bursting at the collar, etc. (1)

The old fashioned Quince is very liable to blight here. It is difficult to get any fruit Are there any new hardier varieties? (2)

The Apple, unless forced in growth, is pretty hardy and productive. D. Puringoton. - Pike, Musaatine Co., Iowa.

(1) We have never observed anything to the contrary.

(2) We think not; the varieties used as stocks, generally grow more rapidly and later in the season, and are therefore not so well fitted to resist extreme cold. As to the blight, we think that one is as likely to suffer by it as the other.

I have a few squares of Dwarf Pears on Quince roots in my garden, planted eight feet apart each way; and as they will in a few years occupy the entire ground, to the exclusion of root crops, I desire to know whether I should continue to have the earth deeply spaded or forked up between the trees? or should it be dug so shallow as not to Interfere with the roots of the trees ? and how near to the trunk of the tree should it be done? A. J. Noblb. - Mont-gomery, Alabama.

Spade deeply where there are no roots. Fork over the roots lightly. The operator will be able to know when he has reached the roots - they generally come to within two or three inches of the surface.

Is the Paris or Fontenay Quince the same as the Upright? It not, does the Upright make good stocks for Pears ? If it is the same, the but question is of course answered in the last number of the Horticulturist. Mr. LE Roy, in his catalogue, says of the Angers Quince, "very productive; the best for preserves." Does it sustain that character here? O. - Omsego Co, N. Y.

The Paris or Fontenay and Upright are quite distinct; the latter is of too slender growth and dwarf habit to make a good stock for the Pear. We have not fruited the Angers sufficiently to say whether it sustains the character given by Mr. La Rot.

Will any of your subscribers inform me by letter, or through the Horticulturist, of the success of conservatories on green-houses attached to their dwellings? Mr. Downing recommended such structures, but I have a vague impression that when tried they have not given satisfaction. May not the dampness and air of the glass-house, covering a door and lower windows, so pervade the dwelling as to make it disagreeable and unhealthy ? E. G. Kelley. - Evergreens, Newburyport, Mass.