As this article doesn't contain an abstract, the image below is necessary to enable the article to be indexed by certain search engines. The resolution of the full-text PDF is much higher than that shown here.
* An earlier version of this paper was presented at the 102nd Annual Meeting of CAMWS in Minneapolis. I am grateful to Professor J. Strauss Clay, Professor C.B.R. Pelling and the reader of CQ for their comments. I would also like to thank the Fondation Hardt.