(1) Biologia Marina Forme e Fenomeni della Vita nel Mare (2) Piscicoltura Pratica Legislazione sulla Pesca d'Acqua Dolce

Abstract

(1) THIS manual follows the lines of the course of lectures on marine biology delivered by the author in the University of Genoa to first-year students, and the subject is treated in a manner suitable to their stage of training. The account deals so far as possible with local conditions aad with marine organisms as they may be seen by the observant student on the Ligurian Riviera, and especially in the neighbourhood of the small marine laboratory established in 1912 at Quarto dei Mille (some three miles east of Genoa), of which the author is director. After giving an account of the more important features of aquatic animals in general, and of the physical conditions under which marine animals live, the author sketches the general characteristics and biology of the animals of the plankton, and describes briefly a number of selected vertebrate and invertebrate examples. In the following chapters abyssal forms and the littoral fauna are considered, and-in the account of the latter the author has included interesting observations on the behaviour of the flagellate protozoa Carteria sub-cordiformis and Cryptomonas sp. and of the cope-pod Harpacticus fulvus in shore-pools under evaporation. By the time the water in the pools has become strongly saline (density about 1″125), these animals have come to rest and show no sign of life. They have entered upon a “latent” condition, and may survive in that state for two or three weeks, recovering on the salinity of the water being reduced again to the normal.

(1) Biologia Marina. Forme e Fenomeni della Vita nel Mare.

By Raffaele Issel. Pp. xx + 607. (Milano: Ulrico Hoepli, 1918.) Price 10.50 lire.

(2) Piscicoltura Pratica. Legislazione sulla Pesca d'Acqua Dolce.

By Prof. Felice Supino. Pp. viii + 327. (Milan: Ulrico Hoepli, 1917.) Price 5.50 lire.