I 



PREFACE. 



MEET my Readers and Correspondents at the comple- 

 tion of this Second Volume, with the satisfaction of directing 

 their notice to the still greater increase of communication, 

 and the means of rendering this work most eminently inte- 

 resting and useful. It is not necessary that I should recapi- 

 tulate the outlines of the plan and rules of conduct by which 

 I have endeavoured to deserve the encouragement of the 

 Public; but I think it truly justifiable to exhibit the marks 

 of that approval at the same time that I express the sensibi- 

 lity with which I accept them, and the spirit they must afford 

 to my labours. 



Without entering into any estimate of the quantity of ori- 

 ginal matter in this work, which from the high value of its 

 correfpondence is now become the authentic repository of 

 the researches of our philosophers ; I will only notice, that 

 the number of original writers in this Volume is more than 

 double that of the refpectable list prefixed to the first Volume, 

 at the same time that the value and importance of the Me- 

 moirs from foreign and domestic publications have continued 

 to increafe. 



The authors of original Papers are Mr. F. Accum ; A. B. C; 

 John Bostock, M. D. J. W. Bos well ; Count de Bournon; 

 H. Campbell, M. D. ; R. Chenevix, Esq. ; Mr. John Clen- 

 nel 3 C. P. ; Mr. Wm. Close ; W. Cruickshank, Prof, at 

 Woolwich ; John Cuthbertson ; D. H. ; J. Fletcher, Efq. 

 G. H ; John Gough, Esq. ; Mr. Olinthus Gregory ; J. C. 

 Hornblower; Rob. Jameson ; J.; Rev. W. Pearson; N.N. 

 Joseph Priestley, L.L.D. F.R.S. &c; H. Sarjeant, Esq.; 

 Mr. Tho. Sheldrake; Dr. J. H. Schroeter; Tho. Thomson, 

 M.D.; Mr. Trevithick ; Troughton; Ez. Walker; Rev. 

 James Wilson, D.D. James Woodhouse, M.D.; Mr. Ar- 

 thur Woolf; Thomas Young, M. D. Prof. P. R. I.; Baron 

 von Zach; and W. N. — Of foreign works, Carcel ; Carreau; 

 Coulomb ; Descroizilles ; Guillot ; Guyton ; Hassel Lache- 

 naie; Lalande; Picket; Proust; Valentine; Vaiiqnelin.— • 

 And of English Memoirs abridged or extracted, Mr. Banks; 

 Wm. Bullock; Sir H. Englefield, Bart.; Mr. Gilpin; J. 

 Gough, Esq.; Ch. Hatchett, Esq.; Wm. Herschel, L.L.D. 

 Ed ; Howard, Esq.; Hulme, M.D.; E. Jones, Esq. H. 

 Sarjeant, Esq. 



The novelty and excellence of the communications with 

 which fri$ Journal has been honoured, haye been produc- 

 tive 



