Drumlins are “among Nature's most graceful hills,” as Charlesworth (1957) has remarked, and it is perhaps as much for aesthetic as for scientific motives that they have received so much attention. And attention they have received, for there probably are hundreds of papers dealing wholly or partly with drumlins, many of which address drumlin form. In view of what might be considered by some a surfeit of such studies, perhaps a justification is in order for adding one more.
Sugden and John (1976) have observed that there are almost as many theories of drumlin formation as there are drumlins. One of the few accepted facts concerning drumlins is that within a given area they tend to have a similar form. As drumlin form varies from area to area, then, if it is assumed that form is controlled by a relatively small number of factors, it is likely that these factors vary from area to area in a corresponding manner. If, by examining drumlin form in many different locations, it proves possible to correlate some glacial or geological conditions with this form, then it may be possible to draw some conclusions about what factors control form. In turn, this knowledge might well shed light on the origin of drumlins.