If the writer were asked to what particular feature of culture more than any other he felt that his success with roses was due, he would reply, to the use of liquid manure. This is applied from the middle of May - just as the foliage gets well started - to the middle of June - when the roses are commencing to open, and the resultant growth is both surprising and gratifying.

When the sap from this kind of food begins to course through the roses, all insect life becomes despondent, and the liberal quantities of it, soaking down through the ground, mean death to the larva of the rose-bug, and all the other miserable depredators who happen to be lurking there. Stir up a half bushel of cow manure in a barrel of water, and let it stand a day or two. Use quite weak at first, and gradually a little stronger, once, twice, or three times a week.

The evening is the best time to apply it, and give after it a good, thorough watering, washing well the foliage. This will neutralize the effect of the manure if too strong, and thoroughly clean the foliage of all insects.

I always have a supply of nice black leaf mould, which I spread over my rose beds very thin, every time they are made up in the flowering season, which is about once a week.

It adds greatly to their appearance, and I think helps to retain the moisture in the ground.

As I cannot always be explaining about it, I am afraid that sometimes people think the roses are growing altogether in that kind of soil, and thereby account for their thrifty appearance; but this would be a great mistake, for I know to my sorrow that hardy roses will not flourish in a soil of leaf mould.

A pleasant diversion in the way of rose growing is to select a straight shoot of some strong growing kind, like Charles Lefebvre or Jean Liabaud, which often throw shoots eight or ten feet in length, and turn it into a rose tree by cutting it off at about five or six feet from the ground, and rubbing off all the lower buds as soon as they appear in the spring, allowing, perhaps, a dozen of the upper ones to grow, to form the head of the tree. All growth below this head is rigidly rubbed off through the season, and if not too many buds are allowed to bloom at one time, a Charles Lefebvre treated in this way can be made to show a continuous bloom throughout the summer, and becomes a very attractive object in the rose garden. The laterals should be pruned to one or two buds each, when the tree is laid down in the fall, and after the second year the head must be thinned out somewhat, to keep it from becoming too dense. On a head of Charles Lefebvre treated in this manner, I counted, last June, the second year of its tree form, over three hundred buds, about two-thirds of which were at once removed.

A tree of this kind should be protected from the sun, and supported by a strong stake driven on the south side of it, and reaching quite up to the head.

A very interesting feature of rose growing to the amateur is, the names and descriptions of the different varieties. There are some twenty or thirty varieties of such remarkable beauty, and excellent qualities, that I cannot resist giving a brief description of them just as I have found them in a practical way. It was a description of the varieties that attracted my attention more than anything else in Mr. Ellwanger's paper.

Previous to this I did not know that there were any hardy roses that were good for anything. I had tried some of the old varieties like Giant of Battles and Caroline de Sansal, without any satisfaction, and I was delighted to find that there was such a list of hardy roses so well recommended to work from. Some of the names rang in my head until I had bought them, and planted them, and watched them into bloom, and they never disappointed me.

In preparing a list of our finest roses now, I should place among the first, a rose which Mr. Ellwanger succeeded in raising, after he prepared his list, which is Marshall P. Wilder. This rose probably has more points of excellence than any other rose we have.

It is of a clear crimson color, beautiful in the bud, which is very rare among hardy roses, and beautiful in all the stages of its bloom; hardy, and of good growth, very fragrant, and is the most continuous bloomer of any of this class of roses. It certainly is a great pleasure to have this beautiful rose left with us as a souvenir of the one who raised it, who did so much more than anyone else to advance the interests of rose growing among us, and also in remembrance of the one whose name it bears.

Louis Van Houtte is undoubtedly the very best dark rose we have, combining all the good qualities above mentioned, except that it is somewhat tender, and requires good winter protection. Its rich, dark, velvety petals make it a great favorite everywhere. Other beautiful dark roses are Prince Camille de Rohan, Baron de Bonstetten, and Jean Liabaud, any of which will at times rival the former in beauty, and they are more rugged in constitution and stronger growers, but they are not such free and continuous bloomers as Louis Van Houtte, which alone among the dark roses can make claim to good remontant qualities.

Eugenie Verdier ranks first with me among the light roses. It is somewhat tender, and has but little fragrance, which little shows the tea blood in its parentage, but has the most magnificent buds, and lingers several days in the half open stage, rivalling in beauty in this state, any other rose that we have. The color is a bright silvery pink, shaded with a delicate tint of salmon. I predict a small fortune for the florist who is successful in forcing this rose for the New York market.

Other light roses are, Gabriel Luizet, which combines great beauty with hardiness and fragrance, but rarely blooms late in the season; Baroness Rothschild, which probably has more admirers than any other rose, on account of its large size and perfection of form, each rose being a bouquet of itself as it nestles down in its beautiful foliage.

There is no rose that shows a wider margin of beauty, between good culture and poor culture, than the pure white Mabel Morrison. It is simply a white Baroness Rothschild, somewhat more delicate in size and fullness of flower, and has been so far with me the only good white rose that I have had, excepting the two old garden roses, Madame Plantier and Madame Hardy, which everyone should have. The white hybrid Noisettes I do not regard as worth cultivating, on account of the poor quality of the flowers, but in thus describing them I do not include the beautiful Eliza Boelle, so delicately shaded with pink; and the hybrid Noisette, Madam Auguste Perrin, will give more blooms than any other rose throughout the entire season; they are always perfect in form, of a clear pink color, and full of the old fashioned fragrance.

I have a feeling, from what I have seen of the new white Merville de Lyon, during the past season, that it is going to be a great help to us in the way of a supply of beautiful white roses.

The rose Ettienne Levet has asserted itself for the past two years in my garden as almost unequalled for beauty of form and color, and I wish it were more generally cultivated.

Glory of Cheshunt is a new rose which I think is bound to come to the front, and Annie Wood is an old rose, which should have come to the front years ago, each of them having sterling good qualities.

It is seldom that we have such a beautiful rose, and at the same time so hardy, and of such easy management as Anne de Diesbach.

We never half appreciated this rose until it was sent out under a false name (Gloire de Paris) and sold all over the country at fabulous prices. Quite similar to it in habit, and the peer of any rose in many respects, is Francois Michelon, with its noble pendant blooms of globular form.

Two very desirable crimson roses are, Marie Bauman and Alfred Colomb, quite similar, the former excelling in freedom of bloom, and the latter for beauty.

Other good crimson roses are, Charles Lefebvre, of strong growth, Charles Margottin, which does not fade in our hot sunshine, and Gen. Jacqueminot, a strong grower and continuous bloomer.

Two quite unique roses are, Marquise de Castel-lane, and Edward Morren, the former of great beauty on its stubby, thorny wood, and the latter with a very peculiar shading of color, which looks as though it might have some material stored away for a future yellow, among our hardy roses, which would be a most acceptable addition to the family.

Such good honest roses as Marguerite de St. Amande, John Hopper, Abel Grand, Jules Margottin, and Louise Odier, the latter a perfectly hardy Bourbon rose, look very plain when compared with some of the more striking beauties before named, but they are always with us, and I trust will always remain.

There are two of the hybrid Teas, which I have grown for years among my hardy roses, with great satisfaction, viz.: La France and Captain Christy. They are the only two of this large family that seem rugged enough to flourish in our climate. I find it an easy matter to carry them through the winter safely, but the difficulty is to get sufficient heat through the flowering season to bring the flowers to perfection. La France gives the better satisfaction, blooming continuously throughout the season, many of the blooms being of remarkable beauty and unequalled for fragrance.

Captain Christy must have the best of care, and be severely disbudded, to bring any flowers to perfection, but one seldom sees a more beautiful rose than a perfect Captain Christy.

[Read before the Horticultural Society of Western New York].