List of New Patents. 1 59 



ment this requisite information; but I deem it justice to state, 

 that all the best iiiade barometers have, for a long time, been 

 marked in the way suggested, chiefly, I believe, on the tube 

 with a diamond. 



There is another source of error, not noticed by Mr. Squire, 

 and it is of some importance ; I mean the correct position of 

 the scale, relative to the basin, which renders it necessary that, 

 in addition to the ratio of the tube to the basin, there should 

 also be on some part of the instrument the equation, or correc- 

 tion to be applied to the scale. 



As there may be some little difFei'ence in the specific gravity 

 of the mercury used, it would give satisfaction to the more ac- 

 curate observer, if some kind of proof or trial was made of all 

 the portable instruments, with a good standard barometer, at 

 least until a variation of one inch had been carefully observed 

 and i-egisiered, from which the future corrections might be cal- 

 culated. I am, gentlemen, yours truly, 



Leighton, 18th Jan. ]y^:5. B. Bevan. 



P. S. The thermometer at Leighton, exposed in the open 

 air in the night between the 1 8th and 1 9th of January, was at 

 1", or 31° under the freezing point; and the following night 

 at 3°. 



LIST OF NEW PATENTS, 



To William Gossagc, of Leamington Priors, Warwickshire, chemist and 

 druggist, for a portulile alarum to be attached to and detached from clocks 

 and watches, and which ma}' be regulated to take ciFect at any given period 

 of time. — Dated the 11th February 1823. — 2 months allowed to enrol spe- 

 cifications. 



To Nathaniel Partridge, of Bowbridge, near Stroud, Gloucestershire, 

 dyer, for improvements in the setting or fixing of steam boilers, or other 

 coppers, by which a considerable saving of fuel will be effected, and the 

 smoke more effectually consumed. — 14th Feb. — 6 months. 



To Thomas Fuller, of the city of Bath, Somersetshire, coach-builder, for 

 his improvement in the construction, of shafts, and .the mode of attaching 

 them to two-wheeled carriages. — 18th Feb. — 2 months. 



To Philip (,'hcll, of Earl's Court, Kensington, Midillesex, engineer, for 

 certain improvements on machinery for drawing, roving, and spinning hemp, 

 flax, and waste silk. — Feb. — 6 months. 



To Augustus Applegath, of Duke-strcet, Stamford-street, Biackfriars- 

 road, Surry, printer, ibr certain improvements in printing machines. — Feb. 

 — G months. 



To Thomas Bury, of Salford, Manchester, Lancashire, dyer, for his im- 

 provement in dyeing or producing a permanent nankeen colour on cotton 

 wool, skein yarn, and certain other articles. — Feb. — 2 months. 



To Francis Deakin, of Birmingham, Warwickshire, sword-maker, for his 

 improvements to jjiano-fortes and other stringed instruments. — Feb.— 6 

 months. 



To William Church, of Nelson-square, Surry, gentleman, for his im- 

 proved apparatus for printing, to be used by type, block, or plate printers. 

 —Feb. — <j months. 



METEORO- 



