out the proper measure of historical fame to all participants, the narrative may turn into a simple catalogue of names and dates. Both of these elements exist in The Historical Background of Chemistry. As Professor Leicester approaches the modern scene, he has space only to march his characters rapidly across the stage and off into the wings. Theory and theorists come in a somewhat bewildering ...

1. Common ecological tasks, such as wildlife monitoring, adaptive management, and behavioural study, often make use of natural signatures (e.g. animal calls or visual markings) to identify individual animals noninvasively. However, there is no accepted method for pre-screening candidate natural signatures to select which signatures are the best-suited for this purpose. In this paper, we suggest...