A six weeks tour through the southern counties of England and Wales : describing, particularly, I. The present state of agriculture and manufactures ; II. The different methods of cultivating the soil ; III. The success attending some late experiments on various grasses, &c. ; IV. The prices of labour and provisions ; V. The state of the working poor in those counties, wherein the riots were most remarkable ; with descriptions and copper-plates, of such newly invented implements of husbandry as deserve to be generally known: interspersed with accounts of the seats of the nobility and gentry, and other objects worthy of notice ; in several letters to a friend /