Being recently in Hartford, we made a brief visit to Col. Colt's. The leading feature here is the large extent of glass, there being, we should think, not less than 2,000 feet of it. A very considerable portion of this is devoted to orchard-house purposes, such as peaches, nectarines, apricots, cherries, pears, etc. Another portion is used as a pinery. The pines are chiefly queens, and most of them in fine condition. A few have apparently been kept too long in' small pots, and are consequently a little brown, but are now recovering their vigor and color, and setting fruit The fruit trees have been in the house only one year, but are in good condition, growing finely, many of them, especially the peaches, being well set with fruit. In the most forward house a very fine crop of peaches has already been gathered. Part of the trees are in pots and tubs, and part in the ground. The latter are large, well set with fruit, but we think in time will become troublesome. The yield of stone fruit in these houses will be very large. We were not a little disappointed in the small quantity of grapes grown here. The colonel, we conclude, has little taste for this luscious fruit. We have often seen twice the quantity grown with half the glass.

The leading features are pines and stone-fruit, and these, Mr. Stubbins keeps in fine order; indeed, the whole place is very creditable to him. There are three pines which we should like to see when ripe. In the orchard-houses we saw tomatoes, corn, etc. The beans and tomatoes looked well, but the corn seemed to rebel against the confinement. Cucumbers are also grown here in great perfection. Between the wing of the dwelling-house is a very beautiful conservatory, regarded as a piece of architecture; but it seemed to us not so good as a plant-house. It contains a unique and beautiful fountain. The grounds about the house are kept in fine order, and are very attractive. There is a picturesque pond, well stocked with fish, and ornamented with a superb fountain. The deer park, with its inmates, is also an interesting object; but the most touching things we saw were the tombs of Mr. Colt's two children. Their position and treatment were very appropriate and impressive, and the fresh flowers daily placed there, spoke feelingly of the parents' love.

Our visit was necessarily brief, but quite satisfactory.