. APPENDIX YIL 



BIBLIOGRAPHY. 

 The following list includes only the more important memoirs, 



(1) General : Methods and Results. 



Jenkins, J. T. " The methods and results of the German plankton 

 investigations, with special reference to the Hensen Nets." Transactions 

 of the Liverpool Biological Society, Vol. xv. 1901. (An admirable short 

 account of the Hensen investigations.) 



ScHiJTT, Fr. " Analytische Plankton-Studien." Kiel and Leipzig, 

 1892. (General, but deals chiefly with the results of the Plankton 

 Expedition.) 



Hensen, V. "Ueber die Bestimmung des Planktons oder des im 

 Meere treibenden Materials an Plianzen und Thieren." 5 Ber. 

 Koinmission Wisse7ischaftlichen Untersuchung d. deutschen Meere, 

 Berlin, 1887. (The original account of the methods and the first 

 results.) 



Hensen, V. " Methodik der Untersuchungen." Ergehnisse Plank- 

 ton Expedition, Kiel, 1895. (Deals with the methods adopted in the 

 Plankton Expedition.) 



Hensen, V. and Apstein, C. "Die Nordsee Expedition 1895 des 

 deutschen Seefischerei Vereins." Wissenschaftliche Meeresimter- 

 suchungen, Kiel Kommission, Bd. it. Heft 2, Kiel, 1897. (This 

 contains a very interesting summary of the methods, and deals also 

 with the productivity of the sea.) 



Apstein, C. " Das Siisswasserplankton," Kiel, 1896. (Accounts of 

 quantitative investigations in the fresh-water lakes of Holstein.) 



Reighard. " Methods of plankton investigation in their relation to 

 ^^ractical problems." Bulletin United States Fish Commission, for 1897, 

 1898, pp. 169 — 175. (An appreciative account of the Hensen inves- 

 tigations.) 



