A 



DIS SERTATION 



BY 



S? WILL I AM C HAMBERS,Kif: 

 Comptroller General o/' fa's Afq/r/folr Wonks. 



LONDON: 



Rinted byW. GRIFFIN", Printer to theROYAJ. ACADEMY"; fold bvHimiii Ca&inns/b*et; 

 and by T.D.AVIE.S, BookfelW to the Royal Academy, in ftqtffcfi/hvet, 

 Com ni ^/>//^//a alfo by J .DoiXSLKY, PatfjMall: WiL-SON" and NlCOIiti . - Wmnd; 



J. AY I 'n:H//wr^ *f'/r>/Lr: mid P. ELMSLEY, J5>w^^ 1772. 



