A correspondent lately compared the usual habitual mode of trimming apple-orchards by the ignorant, who have learned from their fathers that spring was the. time to do it, to the Connecticut deacon's ideas of family government. He read in his Bible, " correct thy son betimes," which he construed to mean by times, or stated periods. Accordingly, he was accustomed to call his boys before him at regular intervals, and give them the rod, however exemplary their conduct might have been; thus fulfilling, as he thought, a Scriptural injunction.------Perthes, the celebrated German bookseller, established himself in that business not merely for the purpose of making money, but with a deep feeling of the important part which a bookseller of the present day may perform in the intellectual and moral elevation of the community to which he belonged. He had observed that where a bookseller possessed an educated taste, works of a high class were in demand, and, in the reverse case, a licentious and worthless literature had a wide circulation. This is true in all countries, and is applicable to newspaper publishing as well as books.

The bookseller here, generally boasts that he has no literary taste whatever. - The resident medical officer of St. Thomas's Hospital, London, asserts that, in Paris, last year, he watched the growth of grass seed sown upon earth prepared with the " town guano" for a lawn, at the Duchess d'Alba's, and on the eighth day it was mown. At Milan, where this guano is extensively adopted, and the town produce for years has been converted to its legitimate uses, the land, he says, yields eight crops of grass a year. He ought to have added that its use is in conjunction with systematized irrigation. [See the Leader of August 30.]- - The name of the town in England, Saffron-Walden, has puzzled us a long time. The latest Floricultural Cabinet says it originated from saffron being first planted at Walden, in Essex, where it increased so rapidly as to confer a name on the place. It grows there plentifully; the stigmas of this plant are cut away and dried, forming the article so much employed as a dye.------An experiment has been tried, of considerable interest, to prove what effect the different kinds of glass had on the plants grown below them.

Five years ago, a four-light frame was devoted to the purpose, having one light' glazed with rough plate, one with corrugated, one British sheet, and one with crown glass. During the five years, a variety of plants have been grown in this frame, including strawberries; and no perceptible difference could ever be detected, either in the growth of the plants, the color of the flowers, or flavor of the strawberries. We may therefore infer that, as regards cultivation, no great amount of difference exists between the descriptions of glass mentioned; while, to suit particular purposes, one sort may be substituted for another, without causing any detriment to the vegetation they cover.------In Gloxinias, a great improvement has taken place of late, especially in the upright-growing kinds, of which Fifeana is the type; they now have varieties with a pink ring round the inside of the throat; white, with a blue belt; lilac, with a white tube, and a dark violet purple, etc.------A real acquisition to the garden is the Clematis langrinoza pallida, with great, round flowers, quite eight inches in diameter, pale blue in color, and full and broad in the petal. It is quite hardy.------Save the haulm of your asparagus in a dry loft, as a shading next season for young-planted celery in the trench.

Nothing can equal it for the purpose.------Mr. Rivers brought to the London Pomological Society, lately, a bunch of an early and nearly hardy black French grape, the Muscat de Sarbelle, very black in color, of the Frontignan flavor and habit. Also a dish of his plum, Early Prolific, No. 2. This is well known as a useful and very productive variety. Mr. Rivers mentioned that it is loaded with fruit this year, but is the only one producing a crop out of about three hundred varieties in his nursery. Mr. Underhili brought specimens of his Sir Harry Strawberry in fine condition; the berries were large, firm, and well colored, and the flavor of Haut-bois. It was pronounced a first-rate fruit. A two year old plant was produced with its fifth crop of fruit, ripe and ripening; it had been forced last year, fruited again early in autumn, and afterwards prepared for early forcing; it produced its first crop this year in January, and being planted out in the usual way bore Its second crop in June, and again as exhibited. These matters were mentioned to draw attention to the prolific tendency it displayed and to suggest the desirability of endeavoring to originate and perpetuate a race of strawberries having this desirable property in a greater degree than those we at present possess.

We have a suspicion, from inspection of some fruit here, that it will not prove as large as in England.------The Standhouder Cauliflower is said to be much superior to the Walcheren for a summer crop and autumn use.------Straw for covering glass structures has proved so efficient, probably from its being hollow, and confining in its interior a quantity of air; a slow conductor of heat, it seems desirable that it should be manufactured so as to preserve, in a great measure, its tubular form, and have a neat appearance.------A tree onion is now cultivated, that is a curious freak of nature. Instead of producing seeds, there is, on the top of the stem, a bunch of small onions, which are excellent for pickling.------Dancer's Prolific White Gooseberry was exhibited lately, in pots, in London, taken from an orchard house, in order to prove that, contrary to the opinion of many, gooseberries will set and ripen under glass. At the same time was shown a collection of beans, among which Mackie's Monarch, alias Songster's Wonderful, elicited much remark from the length of the pods, which were very plentiful on the stalk, and each pod was nine and ten inches in length, and contained five beans.