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Abstract. Comprehensive catalogues of ancient sunspot and auroral observations from East Asia are used to identify possible intense historical geomagnetic storms in the interval 210 BC-AD 1918. There are about 270 entries in the sunspot catalogue and about 1150 entries in the auroral catalogue. Special databases have been constructed in which the scientific information in these two catalogues is placed in specified fields. For the purposes of this study, an historical geomagnetic storm is defined in terms of an auroral observation that is apparently associated with a particular sunspot observation, in the sense that the auroral observation occurred within several days of the sunspot observation. More precisely, a selection criterion is formulated for the automatic identification of such geomagnetic storms, using the oriental records stored in the sunspot and auroral databases. The selection criterion is based on specific assumptions about the duration of sunspot visibility with the unaided eye, the likely range of heliographic longitudes of an energetic solar feature, and the likely range of transit times for ejected solar plasma to travel from the Sun to the Earth. This selection criterion results in the identification of nineteen putative historical geomagnetic storms, although two of these storms are spurious in the sense that there are two examples of a single sunspot observation being associated with two different auroral observations separated by more than half a (synodic) solar rotation period. The literary and scientific reliabilities of the East Asian sunspot and auroral records that define the nineteen historical geomagnetic storms are discussed in detail in a set of appendices. A possible time sequence of events is presented for each geomagnetic storm, including possible dates for both the central meridian passage of the sunspot and the occurrence of the energetic solar feature, as well as likely transit times for the ejected solar plasma. European telescopic sunspot drawings from the seventeenth century are also used to assess the credibility of some of the later historical geomagnetic storms defined solely by the East Asian sunspot andCorrespondence to: D. M. Willis (d.m.willis@rl.ac.uk) auroral records. These drawings cast doubt on a few of the associations between sunspot and auroral observations based entirely on the oriental records, at least to the extent that the occidental drawings provide a more realistic date for central meridian passage of the sunspot actually associated with a particular auroral observation. Nevertheless, on those occasions for which European sunspot drawings are available, the dates of all the pertinent East Asian sunspot and auroral observations are corroborated, apart from just one Chinese sunspot observation. The ancient historical observations of sunspots and aurorae are discussed briefly in terms of modern observations of great geomagnetic storms.

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bstractThis paper describes empirical research amongst hooligans. Such research has not always been valued. The significant factor in hooligan behaviour may be asserted to be the generation of violence in the lower working class and its dissemination amongst football fans. It is commonly asserted that hooligans operate in well-organized groups. It is argued here that such assertions need to be based on better evidence. A detailed account is given of the behaviour of a notorious group of fans and its key individuals. This shows that the 'hard core' fans were distinguished from others only by greater dedication to football and their club; they had a potentiality for violence but only of the low level kind that many others shared; they were more often involved simply because they went to more matches; they lacked organization. Nevertheless outsiders were, not unreasonably, sure they were a violent, organized group. This casts doubt on similar beliefs held about other groups unless beliefs are well substantiated. Detailed ethnography is valuable because it helps to sort out the nature of the 'hooligan' problem that requires to be theorized.

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