Presuming a few remarks about snowballs - especially while the weather is excessively hot - may not have a tendency to give any one the chills, I feel encouraged herewith to give a few facts about them, as they were seen on the estate of Pierre Lorillard, Esq., Jobstown, N. J., on the 19th of May.

It may possibly surprise the reader, when informed that the snowballs I write of, did not melt away, as they might be supposed to do, beneath the bright, warm rays of the meridian sun. On the contrary, they seemed to increase in size, rather than diminish. And yet, they were undoubtedly snowballs - after their kind, though not exactly rounded lumps of cold New Jersey snow, composed of " frozen water precipitated from the atmosphere in the form of white crystals," and compressed into hard balls, but were of the Oriental type, and are known to their admirers as Japan Snowballs, or Viburnum plicatum. To attempt to describe any thing more beautiful than a large circular clump of these hardy, free flowering shrubs, as they then appeared on the lawn, would be difficult indeed. The striking effect they produced among other varieties of shrubs and trees, presented a decided resemblance to a rounded mound of snow, flecked with green - rising from the smooth green turf - when viewed from a distance, so densely were the shapely bushes covered with floral snowballs.

And their pretty, plicated green leaves appeared quite as attractive as the comely flowers they bore, when closely examined.

Although intending to take a general survey of all things horticultural about this very extensive establishment, the object in particular I was most desirous of seeing was the Orchard House. To simply say I was surprised with what I saw inside, would but half express my astonishment; for never had I before looked upon better results from fruit trees in pots or boxes. More vigorous, or better cropped plum trees than these, I think would be impossible to find in this or any other country. And when the reader is informed these thrifty trees were imported from England about a year ago, he too may find something in the facts described to wonder at.

The trees, both plums and cherries, would average from 6 to 8 feet high, and 4 to 6 feet through; and most of their deep green leaves measured from 3 1/2 inches in breadth to 7 1/2 inches long.

The varieties of plums were Transparent Gage, Green Gage, Jodoigne Gage, Coe's Golden Drop, Kerkes and Jefferson. The kinds of cherries selected, were as follows: Early Bigarreau, Elton Bigarreau, Napoleon Bigarreau, Early Frogmore Bigarreau, Black Tartarian, May Duke, and St. Margaret. The plums, as is usual with them while under glass, were of perfect form, without a blemish, and entirely free from the curculio pest, or any other evil to which they seem heir to in the garden or orchard outside.

There was also a fine stock of peaches and nectarines, literally bending with the weight of fruit they were bearing. All of these were growing in 10-inch pots, and many of which had produced from fifty to seventy-five fruit, and were then just beginning to stone. Of course they would require thinning out. The peaches were chiefly the old, though most excellent Royal George; while the nectarines were the fine-flavored and reliable Lord Napier, favorites everywhere. These were placed in houses devoted to them in the long range of glass for which the place is noted, and from which crops of other kinds had been gathered earlier in the season.

The neatly-trained, healthy, prolific, and handsome peach and nectarine trees, which with the greatest regularity or uniformity possible, closely covered the wire trellises, beneath which we walked - under glass - were ripening, as their rich fruity odor made us aware as soon as we entered the houses.

Early Beatrice peach and Lord Napier nectarine are highly esteemed, as each are excellent kinds for early forcing. But as Mr. John Gardener, the skillful manager, under whose supervision everything horticultural around us seemed to prosper, remarked, "we only used sufficient fire-heat to gently start them, and have not forced them, as on previous seasons; they are, consequently, later than usual".

These also, were imported trees from England, and are budded upon straight, clean, Kirkes plum stocks, from 3 to 8 or 9 feet high, according to the position they each occupy in the various houses in which they are cultivated. In one house containing eighteen trees - which were planted three years ago, in the prepared inside border - were then bearing some four thousand fruit, which Mr. G. proposes to reduce in number by judicious thinning out.

There were several houses filled with fine ripe strawberries in pots and boxes, the last of the season under glass, which would be succeeded by those planted in beds outside. From the time they begin to ripen beneath the sashes, until the last gatherings are made from the strawberry grounds, Mr. Lorillard and family will have enjoyed a six months' strawberry season. Sharpless, Cumberland and the Parry varieties are mostly preferred to other kinds.

There were also two large houses well filled with strong, healthy and productive tomatoes, which were likewise trained over wire trellises under and near the glass roof, where they had continued in good bearing condition ever since last October; and still, from appearances, seemed able to produce a continuous supply until October again returns. Of the four houses thus used, two of them were then filled with healthy grape-vines - in pots and tubs - and which were at the time of my visit there showing an excellent crop of fruit. And thus, no sooner does one crop of whatever kind it may be begin to indicate its best days are over, than it is cleared out and succeeded by something else specially made ready for that purpose. And in that way a constant succession of either fruit, vegetables or flowers always seem ready for picking.

In tubs and pots, large quantities of fruitful fig-trees were luxuriating. Of the several kinds under cultivation, Fleming's famous Negro largo is considered the best, and of which Mr. G. had succeeded in grafting a goodly number upon the common fig stocks.

The grape-vines, growing both in pots and in the borders, were in various stages of growth, and were promising excellent results.

As a grower of Gardenias, I verily believe the enterprising cultivator, who may justly feel proud of his success, has no superior. A cleaner stock of healthy, floriferous plants, I feel certain was never seen elsewhere. And some six thousand of these pure white sweet-scented flowers, had been cut during the six previous weeks, and without apparently diminishing the number.

Of Orchids, there was a choice collection in good condition. And the same may be said of the gorgeous Amaryllis, which is also a favorite here, and out of two hundred seedlings fertilized with pollen of the best European species, something valuable may reasonably be expected.

The Christmas batch of Roses, having had their day - under glass - earlier on, were removed outside; immense blocks of which were ripening their wood, ready for similar service when winter returns.

As it would be impossible to enter into close details, in any description I might attempt, without occupying too much valuable space, so will abruptly conclude by saying the visit was a most agreeable one, and am hopeful of often repeating, as I feel deeply interested in the able manager's successful methods of demonstrating progressive horticulture. Mount Holly, May 28th, 1887.