74 New Patents. [Jan. 



Memoir on the Combinations of Phosphorus with Oxygen. 

 By M. Dulong. 



Notice respecting the Decomposition of the Sulphate of 

 Barytes and of the Subcarbonate of Lime by Potash. By M. 

 Berthollet. 



On the Isothermal Lines and the Distribution of Heat over 

 the Globe. By Alex, von Humboldt. 



The Editors have received an account of some experiments 

 that have been performed by Dr. Murray, of Edinburgh, on the 

 composition of muriatic acid, which they regret they were not 

 able to insert in the present number. 



Article XIV. 



New Patents. 



George Manwaring, Esq. Marsh-place, Lambeth; for 

 improvements in steam-engines. May 22, 1817. 



Philip Hutchinson Clay, of London, gentleman; for a 

 combination of machinery for repairing and improving turnpike 

 and other roads and highways, and keeping the same in good 

 order. May 22, 1817. 



Seth Hunt, late of the United States of America, now 

 living in Covent Garden, Esq. ; for an improved escapement for 

 clocks, and watches, and chronometers. Communicated to him 

 by a foreigner residing abroad. May 22, 1817. 



Seth Hunt, late of the United States of America, now of 

 Covent Garden, Esq. ; for certain combinations of improvements 

 in machinery for making pins. Communicated to him by a 

 foreigner residing abroad. May 23, 1817. 



Gabriel Tigere, Duke's-court, Bow-street, gentleman; 

 for a process of manufacturing writing paper in such a way that 

 it will be extremely difficult, if not impossible, afterwards to 

 extract or discharge any writing from such paper. June 3, 

 1817. 



Charles Wyatt, of Bedford-row, coppersmith : for a new 

 method or methods of preventing any disadvantageous accumu- 

 lations of heat in manufacturing and refining sugar. June 3, 

 1817. 



Benjamin Acer Day, of Birmingham ; for certain improve- 

 ments in chimney ornaments, which are so constructed that they 

 may be used for fire-screens, flower or sweet jars, time-piece 

 cases, candlesticks, toast-stands, and various other purposes. 

 June 3, 1817. 



John Parnall, brazier, of Saint Anstell, Cornwall; for a 



