The letter always reaches its destination, but does the exhibition? Hastily installed in makeshift fashion as the opening program of the Te Papa Museum, “Pictura Britannica,” an Australian-curated exhibition of contemporary British art that was initially scheduled to appear in a privately run space, ended up in an institution that is oriented around national identity (the new museum tends to reduce art to a small piece of a larger sociological picture, by placing work alongside such historical curiosities as the waistcoat of Captain Cook or a refrigerator from the ’60s). The inclusion of at