353 



Ltttrary and Philosophical InteUigenee. 



rayl; 



a far superior effect to tbirty-hour the principle of the air-tight carriage* 



clocks, now used ; thus saving a per- 

 petual expense to parishes, by lessen- 

 ing the salary of the person employed 

 to wind it; besides preventing the 

 daily disturbunce a thiity-hour clock 

 suflers in the act of winding, which 

 tends to make a variation in its rate. 



Besides the valuable principles be- 

 fore described, Mr. Wynn has effected 

 several improvements, which in them- 

 selves will be of great importance, by 

 applying a toothed sector to raise the 

 hammer, ijistead of the common lever, 

 ■which removes fifteen-sixteenths of the 

 friction. The oil will adhere much 

 more tenaciously to the sector than to 

 the lever, on which tlicic is great diffi- 



axles, to prevent the pivots of the ham* 

 mer from rust, which, from their neces- 

 sary exposure to the atmosphere, they 

 always contract, and which creates a 

 very great friction both in the raising 

 and falling of the hammer. 



The new hammer may be affixed to 

 church-clocks now in use, at a very 

 trilling expense, without altering any 

 of their machinery ; and, if they were 

 generally applied to the public clocks 

 in London, there is not a habitation 

 whose inmates would not derive the 

 benefit of hearing the hour, a thing of 

 obvious importance to the public, as 

 it would afford the means to every in- 

 dividual to correct his time without 



cuhy to make it remain, on account of trouble to himself, and enable the maa 

 its plane surface, inclined position, and of business to be precise to his appoint- 

 the jerk it suffirs at each fall of the nunts. The application of the ham- 

 hammer ; and, unless it is frequently mer to old clocks, will much lessen 

 attended to, it puts the clock out of the weight at present attached to them, 

 order. A contrivance is also made, on and very much reduce their wear. 



VARIETIES, LITERARY AND PHILOSOPHICAL 



Including Notices of Works in Hand, Domestic and Foreign. 



EDMUND LODGE, esq. Norroy 

 King of Arms, f.s.a. Sic. is cotn- 

 mencing a publication, in 8vo. and 4to. 

 of Portraits of Illustrious Personages of 

 Great Britain, engraved from authen- 

 tic pictures in the galleries of the no- 

 bility, and the public collections of 

 the country ; with biographical and 

 historical memoirs of their lives and 

 actions. — This magniftccnt collection 

 of historical portraits consists of an 

 assemblage of highly-finished engrav- 

 ings of the likenesses of persons most 

 distinguished for elevated rank or 

 splendid talents, from the earliest pe- 

 riod in our history to which authentic 

 portraits can be traced, to about the 

 year 1700, accompanied with biogra- 

 phical and historical memoirs of their 

 lives and actions : not confined to the 

 commemoration of statesmen and he- 

 roes, but including exalted characters 

 of all descriptions. Every portrait 

 will be engraved with the best skill of 

 the English school from the same ori- 

 ginals as furnished the snbjeets of the 

 folio edition, and will be in general 

 executed by the same artists. The 

 work will be published on the first of 

 each alternate month, and completed 

 in thirty-six parts, forming six large 

 volumes ; and, together with the en- 

 gravings, will contain sixty additional 

 subjects, w'ith respective memoirs ; 



thus including all the great charactem 

 of our history of whom authentic por- 

 traits may be traced. 



We have seldom felt greater satis- 

 faction than in having to record the 

 great improvements made in the va- 

 rious gas-light ai)paratus erected by 

 Mr. John Malam, of London, at 

 AVarrington, Manchester, Barnsley, 

 Wakefield, and Wigan, within the last 

 three years. It will beuumecessary forum 

 to say much on the subject of Mr. Ma- 

 lam's genius, as several of his inven- 

 tions have been brought before the public 

 by Mr. Peckslon, in his valuable work 

 on Gas-Light' ng. In the arrangement 

 of his works he has attended to the 

 strictest uniformity, whilst his buildings 

 exhibit specimens of architectural de- 

 sign of a superior order. The economy 

 with which the various operations are 

 carried on in the works he has erected, 

 is at present unequalled ; and the ma- 

 nufactory is not burdened with that 

 noxious matter, which has, in former 

 gas establishments, been the cause of 

 so much complaint. He also produces 

 gas in greater quantities, from the coals 

 used in his retorts, than others usually 

 do, and at less expense of fuel ; while it 

 is so pure as to be altogether innoxi- 

 ous, and adapted for the parlour or 

 the- shop. 



Mr. Jamrs Boadev is preparing for 

 puhlicR- 



