Venerable Orange Tree.
There is an orange tree, still living and vigorous, in the orangery at Versailles, which is well ascertained to be above 400 years old. It is designated the Bourbon, having belonged to the celebrated constable of that name in the beginning of the 16th century, and been confiscated to the crown in 1522, at which time it was 100 years old. A crown is placed on the box in which it is planted, with this inscription, "Sown in 1421."
Thirty-four orange-trees have lately been received at Windsor, as a present from the king of France to George IV.
Potato Mortar.
M. Cadet-de-Vaux found mortar of lime and sand, and also that made from clay, greatly improved in durability by mixing boiled potatoes with it.
An Experimental Farm,
As a school of practical husbandry for a part of central France, has been formed by the celebrated Abbé de Pradt. It is situated about a league from Avranches, on the great road from that city to Bort, in the department of Corrèze.—Foreign Q. Rev.
A Tunnel under the Vistula, at Warsaw,
Has been projected. This mode of communication will be of the utmost utility, especially at the times of the breaking up of the frost, when all intercourse is interrupted. The architect is a foreigner, and has engaged to complete the work in the space of three years.—Paris Paper.
Small White Slugs,