Published online by Cambridge University Press: 07 April 2006
This paper has been much improved in the light of comments or suggestions made by Lesley Brown, Allan Coxon, Paolo Crivelli and Michael Stokes, among others. I must express great gratitude to all my critics; I am as grateful for criticisms against which I have rebelled as for those which I have accepted; no blame must attach to these critics for the remaining errors or absurdities. I am greatly indebted, not for the first time, to Elaine Hutchison for skilful word-processing. Principal sources are listed at the and of the paper.
* This paper has been much improved in the light of comments or suggestions made by Lesley Brown, Allan Coxon, Paolo Crivelli and Michael Stokes, among others. I must express great gratitude to all my critics; I am as grateful for criticisms against which I have rebelled as for those which I have accepted; no blame must attach to these critics for the remaining errors or absurdities. I am greatly indebted, not for the first time, to Elaine Hutchison for skilful word-processing. Principal sources are listed at the and of the paper.