Patents — New Comet — Occultation of Jjipiter. 73 



LIST OF PATENTS FOR NEW INVENTIONS. 



To John Sadler, of Penlington-place, in the parish of Lam- 

 beth, in the county of Surry, gent, for his new or improved me- 

 thod or process of manufacturing carhonate of lead, fonnerly 

 denominated ceruse, but now commonly called white lead. — 

 Dated 3 January 1821 . — 6 months allowed to enrol specification. 



To John Leigh Bradbury, of Manchester, in the county Pa- 

 latine of Lancaster, gent, for his new mode of engraving and 

 etching metal rollers used for printing upon woollen, cotton, 

 linen, paper, cloth, silk, and other substances. — 9 Jan. — ti 

 months. 



To Robert Salmon, of Woburn, in the county of Bedford, esq. 

 for certain improvements in the construction of instruments for 

 the relief of Hernia and Prolapsus, which instrument so improved 

 he denominates Scientific principled, variable, secure, light, easy, 

 elegant, cheap and durable Trusses. — 15 Jan. — 6 months. 



To John Frederic Daniel!, of Gower-street, Bedford- square, in 

 the county of Middlesex, esq. for certain improvements in cla- 

 rifying and refining sugar. — 15 Jan. — 6 months. 



To Abraham Henry Chambers, of Bond-street, in the county 

 of Middlesex, esq. for his improvement in the manufacture of 

 building cement composition stucco or plaster, by means of the 

 application and combination of certain known materials hi- 

 therto unused (save for experiment) for that purpose. — 15 Jan. 

 — 6 months. 



To Ciiarles Phillips, of Albemarle-strcet, Piccadilly, in the 

 county of Middlesex, commander in our Royal Navy, for his 

 certain improvements in the apparatus for propelling vessels, 

 and improvement in the construction of vessels so propelled. 

 — 19 Jan. — G months. 



NEW COMET. 



At the Royal Observatory at Paris a new comet was discovered 

 on Sunday the 2 1st of January, in the constellation Pegasus, 

 near the star marked Gamma. The comet is not visible to the 

 naked eye. 



LUNAR OCCULTATION OF JUPITER. 



Aboidccn, Jan. 11, lBi'l._ 

 Sir, — In my letter which you had the goodness to publish in 

 the last number of your valuable Magazine, I observe two errors, 

 which 1 imajtine 1 have committed in the hurry of copying from 

 my notes. You will much oblige mc by inserting in your next 

 the following corrections of them. 



Page 4o5, line lst,/rj;- apparent time, read mean time. 



13, /or 42"-3 read 4;r'-3. 



George Innes. 

 Vol.57.No. 273. Jaw. 1821. K solar 



