— 54 — 



view to sending definite recommendations for the adoption of a standard hori- 

 zontal plankton net to the next meeting of the Council. 

 3) That attention should be drawn to the use of neutralised Formalin (3 to 4 cc 

 of neutralised 40 "/o Formaldehyde to a 250 cc sample) for the preservation of 

 calcareous organisms in quantitative plankton samples. 



Denmark. 2) A new horizontal closing plankton net was constructed and 

 tried on the "Dana"-Expedition, but the results were not satisfying. 



3) The use of neutralised formaline has been continued for preserving 

 nanoplankton samples, and the results are satisfying as regards the calcareous 

 organisms. 



Scotland. 1) A net as defined in the section has been made and will be exhi- 

 bited at the next meeting of the Council. 



2) A method of working a horizontal closing net will be brought forward 

 at the next meeting. 



3) The use of neutralised formaline for the preservation of plankton samples 

 has been adopted and it is found that the calcareous organisms are well preserved. 



Ireland. The plankton collected on the South coast of Ireland has, in general, 

 been dealt with as recommended by the Plankton Section, but the type of vertical 

 net recommended by the Section has not yet been taken into use. 



6) That in order to make it possible to work out a greater number of quantitative 

 plankton samples it is recommended that some selection of the organisms to 

 be counted should be made. It is not considered desirable to fix any exact 

 limits since the only sure guide to a suitable selection will be the experience of 

 the worker. 



England. 6) This principle has been adopted where it is desired to work 

 rapidly through a collection. 



7) That each country or worker should endeavour to form a type collection or 

 keep typical samples of all organisms identified which could then be available 

 for future reference. Exchange of specimens and correspondence between the 

 workers would tend towards uniform nomenclature. 



Denmark. 7) A type collection of plankton diatoms, several other micro- 

 plankton organisms and several macro-plankton organisms has been formed, and 

 some examples of specimens have been sent to other workers. 



England. 7) A type collection is in process of formation and at present 

 includes over 100 forms. 



8) That samples for the quantitative determination of the micro-plankton should 

 be collected in conjunction with hauls for the collection of eggs and larvae of 

 fish from selected stations. 



England. 8) In the course of the cruises carried out for the study of larval 



