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ing again heated before they are used, and though it is to be regretted that persons should be reduced to such food, yet they are cheaper and more wholesome than the bread usually given in times of scarcity to the poorer classes. _New Pyrometer_. A new air-thermometer has been invented by M. Pouillet, for the purpose of measuring degrees of heat in very high temperatures; an object hitherto of very difficult attainment. By means of this instrument it has been ascertained, that the heat of melted silver is 1677 deg.; of a melted mixture of one part gold and three parts silver, 1803 deg.; and of melted pure gold 2096 deg.. _To Destroy Slugs_. A correspondent of the _Gardener's Magazine_ states, that after in vain trying salt, lime, and dibbling holes for preserving young cauliflowers and cabbages from slugs, he succeeded by spreading some well cut chaff round the plants under hand glasses, and some round the outsides of the glasses. The slugs in their attempt to reach the plant, find themselves immediately enveloped in the chaff, which prevents their moving, so that when he raised the glasses to give the plants air, he found hundreds of disabled slugs round the outside of the glasses, which he took away and destroyed. _To make Kitchen Vegetables tender_. When peas, French beans, &c. do not boil easily, it has usually been imputed to the coolness of the season, or to the rains. This popular notion is erroneous. The difficulty of boiling them soft arises from an excess of gypsum imbibed during their growth. To correct this, throw a small quantity of subcarbonate of soda into the pot along with the vegetables.--_From the French_. _Beet Root Sugar_ Has now become an article of some practical magnitude in French commerce; since the annual consumption is between seven and eight million pounds. _Silk Trade_. It was lately mentioned by Mr. Huskisson, in the House of Commons, as a proof of the flourishing state of our trade, that British Bandanna handkerchiefs were in the course of shipment to India. In addition to this fact, we can state of our own knowledge that they are now exporting to France, in no inconsiderable quantities, not merely as samples, but in the regular course of trade.--_For. Quart. Rev._ _Electricity_. It is curious to take a retrospective view of the mode in which the effects of the Leyden phial were announced to the world, on their first discovery. The ph
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