Method of producing Fruit from Trees inclined to run to Wood, Process for extracting Soda from Minerals. By M. KLAPROTH, 295 Notice on several Processes for gilding and silvering Metals, Notice on the Dutch Method of salting Herrings, Method of constructing Chimneys to prevent them from smoking. Extract from an Essay on the Preparation of Prussiate of Potash perfectly free from Iron; by J. RICHTER. With Experiments on Combinations of Prussic Acid with salifiable Bases; by J. Observations on the Imperfection of Furnaces for Evaporation, and on a new Method of constructing them. By M. CURAudau, On the Preparation of pure Gallic Acid. By J. B RICHTER, Process for extracting the Salt with a calcareous Basis contained in On the Preparation of a Blue Colour from Cobalt, as fine as Ul- Simple and constant Process for obtaining the Colour known by the Name of Turkey or Adrianople Red, in its greatest Beauty and Solidity. By M. HAUSSMANN, Account of the Bridge which is constructing at Paris between the Louvre and the Hotel de Quaire Nations, and of the Experi- ments made to ascertain its Stability, Composition for covering the Stems of Trees, Threshing Mill-Parsnips-Hemp Manures-Lord MULGRAVE'S Premiums - 76 77 78 Preventive Action for Damages for taking an undue Advantage of the Com- munication of an Invention, and obtaining the King's Patent, to the Prejudice of the Inventor, Action for Infringement of a Patent, Smithfield Club-New Thermometer, New Earth called Augustine-Machine for shearing Cloth, Society of Sciences of Bordeaux-Society of Agriculture of Paris, New Thrashing Mill-Engraving on Stones, Method of preserving Turnips from the Fly, Experiments on Wool-Method of preserving Pulse from Weevils, 399 The Cow-Pox a Preventive of the Rot in Sheep, 462 Patents granted for Inventions in the Months of October, Novem- ber, December, January, February and March, 80. 160. 240. 320. PLATES. grafting; and of Dr. YOUNG's Remarks on the Resistance 14. Improved Siphon; Contrivance to prevent Chimneys from smoking; Improvement on Woulf's Apparatus; and Eva 16. Improvement on Spectacles; Self-acting Water-Closet; and Machine for stamping Ores, 17. Cast-Iron Bridge, - 388 412 438 408 THE REPERTORY OF ARTS, MANUFACTURES, AND AGRICULTURE. NUMBER XIX. SECOND SERIES. Dec. 1, 1803. Specification of the Patent granted to THOMAS NEWSTEAD, of Kingston-upon-Hull, in the County of York, Chemist; for a Method of preparing Barilla and Kelp, and the neutral Sults obtained therefrom. Dated June 18, 1803. To all to whom these presents shall come, &c. Now KNOW YE, that in compliance with the said proviso, I the said Thomas Newstead do hereby declare, that my said invention is described in manner following; that is to say: How Barilla and Kelp is to be prepared for Soap-making, Bleaching, and Alum-making. First. I prepare barilla and kelp to obtain the alkali, they contain in a concentrated state by lixiviation, and separating the neutral salts from the alkali. Second. I decompose the sulphate of potash and sulphate of soda (neutral salts) separated from barilla and kelp. VOL. IV.-SECOND SERIES, B Third. Third. I prepare the muriate of potash, which I separate from barilla and kelp, for the use of the alummanufacturer. Fourth. I separate the neutral salts contained in soapmakers spent lie, their salts prepared from spent lie, and the black ash prepared from their salts or spent lie. Fifth. I decompose the sulphate of potash and sulphate of soda contained in the soap-makers spent lie, and their salts prepared from their spent lie, and the black ash prepared from their salts or spent lie. Sixth. How I apply the alkalies and neutral salts, to soap-making, bleaching, and alum-making. 1. To concentrate the alkali contained in barilla and kelp, I grind it very small, then saturate any quantity of water my pan will conveniently boil (which is a flatbottomed cast-iron pan). I add barilla or kelp, by a small quantity at a time, till the boiling water is quite saturated, I then turn the liquor over into a vat, provided with sand to filter. I add about half as much water to the remains in the pan as I had at first, and allow it to boil, and then turn it into the vat to filter. I then fill up the pan with fresh water, and boil the remaining barilla or kelp for a short time; then draw or damp the fire, to allow the residue of the barilla or kelp to fall to the bottom of the pan, which I take out with a proper draining-shovel, and consider it worth nothing more than for manure, or for the use of the glass-manufacturer. I then saturate this water or weak lie with fresh barilla or kelp, and go on as above. Next I take the filtered liquor, and fill up a flatbottomed iron or lead pan, and boil till a strong pellicle is formed; this is to be tasted, to know what neutral salt it is; it is mostly sulphate of potash, but is easily known by being very insoluble in the mouth, and feeling like sand |