New Patents. 237 



per spot showed its nearest position to the sun's centre, with very 

 nearly the same solar latitude as before given, and was quite circu- 

 lar, but not so large as it was last month by one-third of its diame- 

 ter. At this time the lower spot had become irregular in shape, 

 and was divided into two in one umbra; on the 18th into three, 

 and on the 1 9th into four distinct spots in the same umbra, with 

 little variation in its shape or size, but which on the 21st had be- 

 come more faint, and the small spots decreased. At noon of the 

 22nd, the spots had approached near the sun's western limb in the 

 usual contracted state, and at 7 p. m. they were, as nearly as could 

 possibly be ascertained from a correct drawing, in the same posi- 

 tion on the sun's disc as at noon on the 25th of June, making the 

 time of their revolution 27 days and 7 hours. 



The spot which had divided went off in the morning of the 23rd, 

 and the upper one slid behind the sun's western limb at 2 p. m. the 

 same day, forming a little indentation thereon about a quarter of an 

 hour. The upper spot, which has been on the sun's disc since the 

 20th of May, is diminished in size, and growing faint ; and the lower 

 one, which has been on more than forty days, is more faint; therefore 

 it is doubtful whether they will last another revolution : but should 

 they continue on so long, an opportunity may be afforded of ascer- 

 taining the precise time of their revolution with still greater accu- 

 racy, as it is only by repeated revolutions of the same spot or spots, 

 that this circumstance can be correctly known, in consequence of 

 the many difficulties and obstacles that generally occur in making 

 observations of this sort. 



LIST OF NEW PATENTS. 



To A. Bernhardt of Finsbury-square, for his method of raising wa- 

 ter. — Dated the 24th of July 1828.-— 6 months allowed to enrol spe- 

 cification. 



To R. Wornum, of Wigmore-street, for improvements on upright 

 piano-fortes. — 24th of July. — 2 months. 



To J. C. Daniell, of Lumphey Stoke, Wiltshire, for certain improve- 

 ments applicable to the manufacturing and preparing of woollen 

 cloth. — 5th of August. — 6 months. 



To J. L. Higgins, of Oxford-street, Esq. for his improvements on 

 wheel carriages. — I lth of August. — 6 months. 



To W. Mencke, of Park Place, Peckham, Surrey, for his improve- 

 ments in preparing materials for, and in the making, bricks.— 11th 

 of August. — 6 months. 



To L. R. Fitzmaurice, of Jamaica Place, Commercial Road, Mid- 

 dlesex, for his improvements on ship- and other pumps. — 1 lth of Au- 

 gust. — 6 months. 



To W. Grisenthwaite, of Nottingham, Esq., for a new process for 

 making sulphate of magnesia, common called Epsom Salts. — 1 lth of 

 August. — 6 months. 



To H. Maxwell, of Pall -Mall, for an improvement in spring spur- 

 sockets. — 13th of August. — 2 months. 



To T. Stirling, of the Commercial Road, Lambeth, for improve- 

 ments on filtering apparatus. — 16th of August.-— 6 months. 



To 



