“…Later work by Bennie (1866Bennie ( , 1867Bennie ( , 1868, Bell (1894), Clough et al (1925), andElder et al (1935) added to the existing knowledge of Glasgow's Drumlins. Elder et al (1935) appear to have been the first to have produced a map of the drumlin field at a large scale, while Bennie (1868) had earlier noted the significance of boreholes in elucidating glacial sediment stratigraphy in a dense urban'area.…”