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On the occasion of the anniversary of C.A. Clerck's book "Swedish spiders" the paper deals with the beginnings of spider taxonomy, Clerck's life (1709-1765) and work, and P. Bonnet's successful campaign for the validation of species names given by Clerck.
1795 erschien ein Werk unter dem Titel "Sur la Decouverte du Rapport Constant, entre I'apparition ou la disparition, le travail ou le non travail, le plus ou le moins d'etendue des toiles ou des fils d'attache des Araignees des differentes especes; et les Variations AthmospMriques du beau temps a la pluye, du sec a I'humide, mais principalement du chaud - au - froid, & de la gelee a glace au veritable digel: par le Citoyen QuatremereD'lsjonval". Das Buch, aber auch seine Entstehungsgeschichte und das bewegte Leben des Autors schienen es mir wert zu sein, 200 Jahre nach Erscheinen einige Worte darüber zu verlieren. Dabei stütze ich mich auf die Übersetzung ins Deutsche (QUATREMÈRE-D'ISJONVAL 1799).
The first rhinoceros of the post-roman era reached Europe in 1513. Albrecht DÜRER, who had not seen the animal himself, made a woodcut that contained several odd features. This woodcut determined the appearance of rhinoceroses for the next two centuries. - The first reports on the food of Eresus sp., citing tiger beetles and dung-beetles as principal prey items, had a somewhat similar fate, i. e. they were accepted as facts for more than half a century. - The present study, performed in Valais, Switzerland, shows E. cinnaberinus to have a much broader prey spectrum: Beetles, half of them carabids, constituted 42 %, ants 36 %, other insects 17 %; 3 % were made up by arthropods other than insects. No tiger beetles or dung-beetles were found. - It can be concluded that even numerous repetitions in textbooks may not reflect the true story.
