Abstract
THE scientific Work of Prof. Johan Hjort, who died on October 7, shows three overlapping phases. As a young man, after his university training at Oslo and Munich, he spent some time at the Zoological Station in Naples (where he met MacBride and Boveri) investigating a problem of pure zoology, the development of the bud in the ascidian Botryllus, with special reference to the germ-layer theory, then in full vogue. His paper, published in 1896 (Zool. Res. Norwegian North Atlantic Expedition), is still regarded as outstanding by modern experts on the group. Until 1900 he was lecturer in zoology at the University of Oslo and seemed headed for an academic career. But even in this first phase his interests turned to the sea and its practical problems, for it was in 1897 that he made his first discoveries about the Norwegian prawn and its commercial possibilities.
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