Br the following account from the Illustrated News, it will be seen that this magnificent water lily has been grown in an open pond in England. An uniformly high temperature of the water has been secured for it, partly by artificial means, it is true. - but we imagine this would not be needed in the United States - supposing the Victoria to be planted about the middle of June.

We understand Mr. Cope, of Philadelphia, has the Victoria growing in a hot-house which he has lately erected for this noble aquatic, and we hope some amateur will make trial of it now in the open air. Ed.

A successful attempt has been made by Messrs. John Weeks & Co., King's Road Nursery, Chelsea, to grow this magnificent plant in the open air. For this purpose was prepared a pond 21 feet in diameter, and 3 1/2 feet in depth, wherein the lily was planted in loam and river sand, on the 3d of March, when it had three leaves, the largest being 18 inches in diameter. The plant has since increased in size, and has a robust and healthy appearance: the number of leaves on at present is seven, varying from 3 1/2 to 4 feet in diameter; and, as the season increases in warmth, they will -attain to a much larger size. The petioles of the leaves are from eight to twelve feet in length, throwing them a considerable distance from the base of the plant.

The first flower partially expanded on the evening of the 16th inst.: for some hours previously it gave out a very rich and powerful fragrance, which could be perceived at a considerable distance. The flower became fully expanded on the following evening, and displayed all its beauties to an admiring company, who had been for a considerable time watching its development. The colors of the lily are white and pink; the outer rows of petals being white, and the inner a rich pink. The entire flower is from nine inches to a foot in diameter: it is of short duration, opening only on two successive evenings; but there is a constant display of flowers throughout the season. The plant has a more noble appearance in the open air, than when growing in the hot-house aquarium - the leaves becoming hypocrateriform, a natural desideratum of much interest.

The pond in which the plant is growing is heated by hot water pipes, of which there are two rows placed at the bottom, communicating with a boiler which heats, besides, a range of houses, the temperature being thereby kept at from 75 to 90 degrees Fahrenheit. There is a constant flow of clear water into the pond, and a waste pipe to carry off the superabundance and keep the surface clear. A margin of blue, yellow and white water-lilies, is placed round the Victoria Regia, and tends to show well their lovely and truly regal Sovereign in all her majesty. A temporary covering is placed over the plant at night to protect it from storm and cutting winds.

The Victoria Regia has been an object of unceasing interest from the moment of Sir Robert Schomburgk, in 1837, finding this magnificent plant in one of the rivers of British Guiana. In England the Victoria Regia first flowered in 1849, and the spectacle was engraved in the Illustrated London News for Nov. 17. A leaf and flower of this plant, it will be recollected, was presented to her Majesty and Prince Albert, at Windsor, by Mr. Paxton; and the train of circumstances by which this very plant was mainly contributa-ry to the success of the great exhibition is so interesting as to merit recapitulation. We give it in Mr. Paxton's own words: - "Having in contemplation the erection of the great conservatory at (Chatsworth) in its present form, it was determined, in 1836, to erect a on the ridge and furrow principle, to be constructed entirely of wood, for the purpose of exhibiting how roofs of this kind could be supported. The plan adopted was this - the curved rafters were composed of several boards securely nailed together on templets of wood cut to the exact curve; by this means a strength and firmness was obtained sufficient to support an enormous weight.

This house was subsequently fitted up for the Victoria Regia; and it was here I invented a waterwheel to give motion to the water in which the plant grew; and here this singularly beautiful aquatic flowered for the first time in this country, on November 9, 1849. You will observe that nature was the engineer in this case. If you examine this, and compare it with the drawings and models, you will perceive that nature has provided it with longitudinal and transverse girders and supporters, on the same principle that I, borrowing from it, have adopted in this building."