Spirit of Discovery.
Regent's Park.
It is much to be regretted that those who first designed the plantations of the Regent's Park seem to have had little or no taste for, or knowledge of, hardy trees and shrubs; otherwise, this park might have been the first arboretum in the world. Instead of the (about) 50 sorts of trees and shrubs which it now exhibits, there might have been all the 3,000 sorts, now so admirably displaying their buds and leaves, and some of them their flowers, in the arboretum of Messrs. Loddiges at Hackney. A walk round that arboretum, at this season, is one of the greatest treats which a botanist can enjoy, and a drive round the Regent's Park might have been just as interesting. It is not yet too late to supply this defect, and the expense to government would be a mere bagatelle. The Zoological Society in the mean time, might receive contributions of herbaceous plants, and be at the expense of planting and naming them.—London's Mag.
Zoological Society.
A catalogue of the members has been published, which includes 1,291 names, besides corresponding members. The museum in Bruton Street has received, and is daily receiving, valuable additions, as is the garden in the Regent's Park. The extent of this garden has been, in consequence of the various donations and purchases, considerably increased, and several neat and appropriate structures are now erecting for the abode of different specimens. It is a gratifying circumstance that these specimens are, for the most part, clearly and distinctly named, with the native country of the animal added. We could wish to see a greater variety of trees, shrubs, and herbaceous plants introduced, and equally clear names and geographical indications placed at them also. Why should it not, as far as practicable, be a botanic garden as well as a zoological garden?—Ibid.
Galvanism.
Mr. Becquerel has discovered that the temperature of a conducting wire communicating with the two poles of a pile, increases from each of its extremities, and constantly reaches its maximum in the middle of the wire.—Brewster's Journal.
Alloyed Iron Plate.
A manufacture of prepared iron has been practised, and the substance produced used to a considerable degree in Paris. This has been to prepare iron in large plates, and other forms, so that it will not rust. This has been effected by coating it with an alloy of tin and much lead, so as to form an imitation of tin plate. Trials have been made, and proved favourable; it resists the action of certain fluids that would rapidly corrode iron alone; it can be prepared of any size, and at a low price. Its use in the manufacture of sugarpans and boilers, in the construction of roofs and gutters, is expected to be very considerable. —Bull. d'Encouragement.
Saline Lake of Loonar in Berar.
This curious lake is contained in a sort of cauldron of rocks amidst a pleasing landscape, and is of course the object of superstition. The taste of the water is uncommonly brackish. Mr. Alexander, who describes it, found by a rough analysis that 100 parts contain
Muriate of Soda 20 parts,
Muriate of Lime 10 parts,
Muriate of Magnesia 6 parts,
The principal purpose to which the sediment of the water is applied is cleansing the shawls of Cachmere. It is also used as an ingredient in the alkaline cake of the Musselmans.—Trans. Lit. Soc. Madras.