APP. VIl] BIBLIOGRAPHY 317 



(2) Results. 



Brandt, K. " Ueber den Stoffwechsel im Meere." Wissen- 

 schaftliche Meeresuntersuchungen^ Kiel Kornmission, Bd. iv. Kiel, 1899. 

 (There is an English translation in the Aniiual Report of the Smithsonian 

 Institution for 1901 but unfortunately the footnotes are omitted.) 



Brandt, K. " Ueber den Stoffwechsel im Meere," 2 Abhandluno-. 

 Wiss. Meeresunt. Kiel Komm. Bd. vi. Abth. Kiel, 1902. 



Brandt, K. "On the production and the conditions of pro- 

 duction in the sea." Rapports et Proces-Verhaux, International Council 

 for the Exploration of the Sea, Vol. iii. Appdix D, Copenhague, 1905. 

 (A summary of the results contained in the two previous papers.) 



Brandt, K. " Beitrage zur Kenntniss der chemischen Zusammen- 

 setzung des Planktons." Wiss. Meeresunters. Kiel Komm. Bd. in. Heft 3, 

 Kiel, 1898. (Chemical composition of the plankton.) 



Apstein, C. " Plankton in Nord- und Ostsee auf den deutschen 

 Terminfahrten." Wiss. Meeresunt. Kiel Komm. Bd. ix. Abth. Kiel, 

 1906. (This paper contains estimations of the density of the plankton 

 in the North Sea and in the Baltic.) 



Raben, E. " Uber quantitative Bestimmung von Stickstoffverbin- 

 dungen im Meerwasser " &c. (with a further paper on the same subject in 

 the same Heft) Wiss. Meeresunt. Kiel Komm. Bd. viii. Abth. Kiel, 1905. 

 (This paper and its appendix contain the results of estimations of the 

 proportions of silica and nitrogen compounds in the North Sea and 

 Baltic.) 



Putter, A. " Studien zur vergleichenden Physiologie des Stoff- 

 wechsels." Abhayidl. kmiiy. Gesell. Wissensch. Gottingen, Bd. vi. Nr. 

 1, 1908. 



Putter, A. " Die Ernahrung der Wassertiere," " Der Stoff- 

 haushalt des Meeres." Zeitschr. allgem. Physiologie, Bd. vii. 2 and 3 

 Heft, 1907. 



(3) Critical. 



Haeckel, E. " Plankton-Studien." Jena, 1890. (English transla- 

 tion in the Uriited States Fish Commissioner's Report for 1889-91, 

 Washington, 1893.) .(In part an attack on Hensen's methods.) 



Hensen, V. "Die Plankton-Expedition und Haeckel's Darwin- 

 ismus." Kiel und Leipzig, 1891. (Hensen's reply to the " Plankton- 

 Studien.") 



