Letter | Published:

Narcotic for Marine Invertebrates

Nature volume 150, pages 121122 (25 July 1942) | Download Citation

Subjects

Abstract

THE following method is cheap and simple, and gives excellent results with such soft-bodied marine animals as have been tried (Polychaetes, Doris, Priapulus, Nemertines, Ascidians). Make up 80 gm. of crystalline magnesium chloride in a litre of tap water. Immerse the animals in it. In one to four hours they will be relaxed and expanded. Add strong formalin to the magnesium solution ; when they are dead, transfer to any desired fixative or preservative.

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Affiliations

  1. Department of Zoology, University College, London. June 24.

    • ISABEL C. LEDINGHAM
    •  & G. P. WELLS

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DOI

https://doi.org/10.1038/150121c0

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