(1) Bulletin Trimestrie: Conseil Permanent International pour l'Exploration de la Mer Résumé des Observations sur le Plankton des Mers explorées par le Conseil pendant les Années, 1902–1908 (2) The Decapod Natantia of the Coasts of Ireland (3) Report of a Survey of the Trawling Grounds on the Coasts of Counties Down, Louth, Meath, and Dublin

Abstract

(1) IN 1908 the International Council resolved to prepare a report on the plankton work carried out by the countries participating in the international fisheries investigations, and the present bulletin contains the first instalment of this report. The bulletin begins with lists of the stations and times of investigation, and of the kinds of nets employed and the occasions on which they were worked. Special reports are then given, in which various specialists deal with the annual and seasonal abundance of the main groups of animal and plant organisms represented in the catches. The groups so far summarised are the Tin-tinnoidea, Halosphasra and Flagellates, Cladocera, Pteropoda, and Copepoda. Following these special reports are synoptical charts representing the abundance and seasonal distribution of the commoner species contained in the groups studied. The material thus summarised is very considerable; 332 stations in all were worked, some 14,000 hauls were made, and altogether about 800 species of planktonic organisms were identified. It is evident, however, that the deduction of general results from this mass of material has been a difficult task. The coordination of the observations has been imperfect from the first; many changes have been made, and there has been confusion in the choice of methods of investigation. Nevertheless the. results obtained are of very great value, and general facts of distribution in relation to the physical changes taking place in the sea emerge clearly from the study of the data. The report provides a concise and valuable, summary of this extensive investigation.

(1) Bulletin Trimestrie: Conseil Permanent International pour l'Exploration de la Mer. Résumé des Observations sur le Plankton des Mers explorées par le Conseil pendant les Années, 1902–1908.

Edited by H. M. Kyle. Part i. Pp. xxxiv + 79, and 10 plates. (Copenhague: And. Fred Høst et Fils, 1910.)

(2) The Decapod Natantia of the Coasts of Ireland.

By Stanley M. Kemp. Scientific Investigations, 1908, Department of Agriculture and Technical Instruction for Ireland, Fisheries Branch. Pp. 190 + 23 plates. (Dublin: 1910.) Price 3s. 6d.

(3) Report of a Survey of the Trawling Grounds on the Coasts of Counties Down, Louth, Meath, and Dublin.

By E. W. L. Holt. Part 1., Record of Fishing Operations. Scientific Investigations, 1909, No. 1, Department of Agriculture and Technical Instruction for Ireland. Pp. 538 + 2 plates. (Dublin: 1910.) Price 3s.