Valuable Discovery in Agriculture.

One of the most recent of useful discoveries in agriculture is to mix layers of green or new cut clover with layers of straw in ricks or stacks; thus the strength of the clover is absorbed by the straw, which, thus impregnated, both horses and cattle eat greedily, and the clover is dried and prevented from heating.  This practice is particularly calculated for second crops of clover and rye-grass.

Pine Apples.

The largest pine ever grown in this kingdom was cut lately from the hothouse of John Edwards, Esq. of Rheola, Glamorganshire, and was presented to his Majesty at Windsor.  It weighed 14 lbs. 12 oz. avoirdupois, was 12-1/2 inches high, exclusive of the crown, and 26 inches in circumference.

Sea Couch for preventing Sickness.

An elastic or swinging seat, couch, or bed, for preventing the uneasy motions of a ship or a carriage, has recently been invented.  To effect this, the frame of the seat or couch is suspended on juribals or joints, turning at right angles to each other, and an elasticity is produced both in the seat or cushion, and in the swinging frames, by the use of spiral metal springs.  These springs are made by twisting steel or iron wire into the form of an hour glass, that is, like two cones united at their apices.  The lower points of their springs are to be sown to the canvass or webbing, and their upper parts secured in their proper situations and erect positions by pack-thread or small cords, tied or braced from one to the other, crossing like a net.  On the tops of these springs the usual covering of canvass is laid, and then a thin layer of horsehair or wool, upon which the outer covering is bitted.  Sir Richard Phillips, in the Monthly Magazine, describes the following successful experiment for preventing sea-sickness, made on his crossing from Dover to Calais, a few years since.  He caused an armed chair to be placed on the deck of the vessel, and being seated in it, he began to raise himself up and down, as on horseback.  The passengers laughed at his eccentricity, but before they reached Calais, many of them were sea-sick, whilst Sir Richard continued to enjoy his usual health and vigour.

Bites of Venomous Reptiles.

M. le D’Record, sen. discovered, during a long residence in America, what he considers a sure mode of preventing mischief from such bites.  “It is sufficient,” he says, “to pour a few drops of tincture of cantharides on the wound, to cause a redness and vesiccation; not only is the poison rendered harmless, but the stings of the reptiles are removed with the epidermis that the bladder raises.”—­Med.  Journal.

Naval Schools of France.