This Day is published, in Five 4argc Volumes, 3yo. Price 3I. ijs. in PoarSs, 



(A Fourth Edition, greatly improved and enlarged, of) 



A SYSTEM OF CHEMISTRY, 



By THOMAS THOMSON, M.D. F.R.S.E. 



Printed for Bell and Bradfutc, Edinburgh ; John Murray, Fleet-street, 



L,or.don; and Gilbert and Hodges, Dublin. 



GOOD AND GREGORY'S NEW CYCLOPAEDIA, 



ENTITLED 



PANTOLOGIA. 



THE Tbhty-nititb Part of this conipr<.'.;ensive and interesting Work w.$ 

 publislu'.' on Tuesday the f t of O<f\ober, price Six Shillings; and 

 arrangements arc nowr made to ensure the regular publicati.n of a Part every 

 Slonth until the Work is completed. The whole will be comprized, as nearly 

 as possible, consistently with perspicuity and utility, in Fifty Parts, making 

 Ten elegmt Volumes in Royal Oftavo. Any one or more of the Parts already 

 published may be procured of the Proprit^turs. 



London: Primed for G. Kcar>ley ; J. Walker; J. Stockdale ; R. Lea; 

 E. Jcffery; Crosby and Co.; Sherwood, Neely, and Jones; Suttaby and Co.; 

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*:^* This publication, which is by fir the most compreben'ivc, correct, 

 and useful of its size and price, is conducted by J M. GOOD, Esq. F.R.S. 

 Member of the American Philosophical Society and of the Linnean Society 

 of Philadelphia; OLINTHUS GREGORY, LL.D. of the Royal Military 

 Academy, Woolwich; ;ind Mr. NEWTON BOSWORTH, of Merto(» 

 Hall, Cambridge ; gentlemen of established eminence in their respective 

 departments; and assisted by other? of scientific pre-eminence and skill. 

 The authors have d, voted many years to the preparation of the work ; and 

 have uniformly been guided by th« principle o( oviitling nothing essential, and 

 aomittiitg nothing extraneous or useless. The .«evcral articles and treatises 

 in the depaitmcnts of Botany, Chkmistky, Medicike, Machineky, 

 Mathematics, SuHOfRV, ^^oologt, &c. may challenge a comparison 

 with articles on similar sui>jects in every other Encyclopaedia, Engliit) 

 or Foreign. The Biouraphical articles are prepared with great caution 

 and impartiality: :.iid .the most scrupulous atren;iin has been exeicised 

 to prevent the admis.ion of a ii gle line unfavourable to the interests of ju t 

 government or of sound religion. 



Many hundred important technical words will be found in this Dictionary 

 wh ch have not bien inserted in any oth r Cytlopsedia extant. I he Geo- 

 graphical articles, with the G .Zettcer, will be found to contain the latest 

 and mos: correct infoin.ation ; and a special attcmion has been paid to the 

 department of Statistics. The Plates on subjects of Mecb mism a:e from 

 drauiiigs by Fakkv, jun. : and those in Natur- I History (forming nearly 

 half) are accur^teiy cofourtdfr^m life, the drawings by that xkiliul artist Mi . 

 Syukxham EowAKrg. These ate a few of ihe more prominent advantages 

 held out to I he purchasers of the l'ANTOi.t)Gi.\; ddvant '.ges the whole of 

 Vhich arc not to beobtain?d in works of double the jjrne, and several wf 

 which are not d. rivabic froiB the pcrufal of a;iy other work whatever. * 



The Fortieth Part of iheP.ANTOLOGiA v ill contain an origii a' and valuab'e 

 treatise on Na-uigation, by that ublc mathematician Mr. Gi.tNnKNsiNG, of 

 .hv Maval Hosp'tal, Yarmoulb. 



