Erratum

A recent letter drew my attention to a terrible mistake I made in my column on vampires (9 January, p 135). I inadvertently wrote that vampires should be confronted at night, when in fact their strength at that time is at its maximum. I hasten to make this correction to avoid serious accidents. Regarding the gentle criticism that my account was incomplete, this is because you can squeeze only so much vampire stuff into a small space, or even a …