1 5 1 New Patents. 



is covered with a thin piece of talc : he was induced to try this ex- 

 periment in order to ascertain whether the motion might not be the 

 result of external causes acting upon the surface of the fluid. On 

 the 29th of June last, he carried the experiment further, by sealing 

 hermetically the whole circumference of the talc, in order to pre- 

 vent evaporation, which (although ten days have elapsed) has not 

 taken place ; and yt-t there is not the slightest alteration either in 

 the molecules or their motion, and (should the sealing be perfect) 

 most probably none will occur : this experiment proves that eva- 

 poration is not the cause of the motion. 



Mr. Gary, optician, 181 Strand, has the specimen in his posses- 

 sion, ready for exhibition to those who may feel an interest on the 

 subject. Mr. Holland used No. 2 of the deep power sold by Mr. 

 Gary, the sidereal focus of which is the l-30th of an inch, with a 

 linear magnifying power of 300 : this power developes the phseno- 

 mena connected with these molecules in a most satisfactory manner. 



July 9, 1829. 



LIST OF NEW PATENTS. 



To H. R. Palmer, London Docks, for improvements in the con- 

 struction of warehouses, sheds, and other buildings, intended for the 

 protection of property. — Dated the 28th of April, 1828. — 2 months 

 allowed to enrol specification. 



To B.Cook, Birmingham, for an improved method of making rollers 

 or cylinders of copper and other metals, or a mixture of metals, for 

 printing of calicos, silks, cloths, and other articles. — 23d of April. — 

 6 months. 



To J, Wright, Newcastle upon-Tyne, for improvements in condens- 

 ing the gas or gaseS produced by the decomposition of muriate of 

 soda and certain other substances, which improvements may also be 

 applied to other purposes. — 28th of April. — (i months. 



To P. Pickering, Frodsham, Cheshire, and W. Pickering, Liverpool, 

 merchants, for having invented aa engine, or machinery, to be worked 

 by means of tiuids, gases, or air, on shore or at sea, and which they 

 intend to denominate Pickering's Engine. — 28th of April. — 6 months. 



To J. Davis, Lemon-.street, sugar-refiner, for a certain improve- 

 ment in the condenser used for boiling sugar in vacuo. — 28th of 

 April. — G months. 



To G. W. Lee, Bagnio-court, Newgate-street, merchant, for cer- 

 tain improvements in machinery for spinning cotton and otiier fibrous 

 .sjibstances. — 2d of May. — (! months. 



To H. Bock, Esq. Ludgate-hill, for improvements in machinery for 

 embroidering or ornamenting cloths, stuil's, and other fabrics. — 2d of 

 May. — C months. 



To J. Dutton, junior, Wotton Underedge, Gloucester, clothier, for 

 certain improvements in propelling ships, boats, and other vessels or 

 floating bodies by steam or other power. — 19th of May. — 6 months. 



To M. Dick, Irvine, Air, for an improved rail-road, and for propel- 

 ling carriages thereon by machinery, for conveying passengers, letters, 

 intelligence, packets and other goods, with great velocity. — 2ist of 

 Mav. — 6 months. 



To 



