On 28th June Alan Cann led a visit to Jubilee Walk, an old railway cutting at Leire. This site, which some members had not visited before, has a rich flora but sadly has suffered from the attentions of the tidy brigade, with much gardening and introduction of cultivated plants. Although it was not the hottest day of the heatwave, the temperature was nudging close to 30C - not normally the best time for insect watching. The sheltered site, formerly a haven for many insects, is slowly being overgrown by trees, although these did provide some welcome shade on such a hot day. A number of good plant finds were made, such as Wild Liquorice, Astragalus glycyphyllos, but the highlight of the visit had to be the many butterflies. Most notable were a large group of Green-veined Whites, Pieris napi, extracting moisture and minerals from a remaining patch of mud under one of the road bridges. This sight gave the outing an Amazonian feel, not something always experienced on Natural History Section walks.