PREFACE. 



H 



AVING concluded our Firft Volume, we. 

 would be deficient in gratitude did we not return 

 thanks to the Public, in general, for the favourable 

 reception our labours have experienced ; and to 

 thofe Scientific Gentlemen, in particular, who have 

 affifted us with Communications, as well as Hints 

 refpecling the future conducting of the Work. 



As the grand Object of it is to diffufe Philofo- 

 phical Knowledge among every Clafs of Society, 

 and to give the Public as early an Account as pof- 

 fible of every thing new or curious in the fcicntific 

 World, both at Home and on the Continent, we 

 flatter ourfelves with the hope that the fame liberal 

 Patronage we have hitherto experienced will be 

 continued; and that Scientific Men will afford us 

 that Support and AfMance which they may think 

 our Attempt entitled to. Whatever may be our 

 future Succefs, no Exertions fhall be wanting on our 

 part to render the Work ufeful to Society, and efpe- 

 cially to the Arts and Manufactures of Great Britain 

 which, as is well known, have been much improved 

 by the great Progrefs that has lately been made in 

 ▼arioHs Branches of the Philofophical Science 

 Aa 



