IN the month of August last year, Sir John Murray approached me with the liberal offer of defraying the oexpenses of a deep-sea expedition to the Atlantic Ocean, provided the Norwegian Government were willing to lend their research-vessel, Michael Sars, for the purpose. Sir John Murray wished to ascertain whether the appliances and instruments used by the Michael Sars for her work in the Norwegian Seas would yield new information in the Atlantic. It was, besides, considered desirable to examine parts of the Atlantic that had previously been only very slightly explored. The Norwegian Government at once signified its willingness to accept this proposal, and I accordingly employed the past winter in making preparations for the expedition, assisted by the captain of the ovessel, Mr. Thor Iversen, Prof. H. H. Gran, who agreed to lead the investigation of phytoplankton, and Mr. Heliand Hansen, who took charge of the hydrographicai researches. For my own part, I decided to cooperate with Mr. E. Koefoed, and to devote myself especially to zooplankton and the study of the bottom-fauna.
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