282 DISCOVERY REPORTS 



methods of studying whale movements, provided that a sufficiently large number of 

 observations are considered. By itself the method will not provide reliable criteria, 

 apart from the fact that any whale upon which the infection is readily visible, has spent 

 at least one month within the Antarctic Zone. 



I should like to record my grateful thanks to Dr Kemp for seeing the manuscript 

 of this paper through the press during my absence abroad. 



REFERENCES 



Bennett, A. G. (with an Appendix by Nelson, E. W.), 1920. On the Occurrence of Diatoms on the Skin 



of Whales. Proc. Roy. Soe. B, xci, pp. 352-7. 

 Cleve, p. T., 1894-5. Synopsis of the Naviculoid Diatoms. K. Sevensk. Vet. Akad. Handl., xxvi, 2, xxvii, 3. 



Stockholm. 

 Deacon, G. E. R., 1933 , A general Account of the Hydrology of the South Atlantic Ocean. Discovery Reports, 



VII, pp. 171-238, pis. viii-x, text-figs. 1-24. 

 Earland, Arthur, 1933. Foraminifera. Part II, South Georgia. Discovery Reports, vii, pp. 27-138, 



pis. i-vii, text-figs. 1-3. 

 Ghazzawi, F. M., 1933. The Littoral Diatoms of the Liverpool and Port Erin Shores. Journ. Mar. Biol. 



Assoc, n.s., XIX, pp. 165-76. 

 Gran, H. H., 1912. Pelagic Plant Life. In Murray and Hjort: Depths of the Ocean, London. 

 Hamilton, J. Erik, 1914. Report to the Committee appointed to investigate the Biological Problems incidental 



to the Belmidlet Whaling Station. British Assn. Rept. Section D, Australia, 1914, Ref. no. 6. 

 Harmer, Sir Sidney P., 1931. Southern Whaling. Proc. Linn. Soc. Lond., Session 142, pp. 85-163. 

 Hinton, M. a. C., 1925. Report on the papers left by the late Major Barrett-Hamilton, relating to the whales 



of South Georgia. Crown Agents for the Colonies, London, pp. 57-209. 

 HusTEDT, Friedrich, 1930. Die Kieselalgen.. . . i Teil. In Rabenhorst's Kryptogamen-Flora von Deutsch- 



land, Osterreich und der Schweiz, vii, Leipzig. 

 Kemp, S., and Bennett, A. G., 1932. On the Distribution and Movements of Whales on the South Georgia 



and South Shetland Whaling Grounds. Discovery Reports, vi, pp. 165-90, pis. vii-xlii, text-figs. 1-6. 

 Lebour, M. v., 1930. The Planktonic Diatoms of Northern Seas. Ray Society Monograph 116, pp. i-x, 



1-244, pis. i-v, London. 

 Mackintosh, N. A. and Wheeler, J. F. G., 1929. Southern Blue and Fin Whales. Discovery Reports, i, 



pp. 257-540, pis. x.xv-xliv, text-figs. 1-157. 

 Matthews, L. Harrison, 1932. Lobster-Krill : Anomwan Crustacea that are the Food of Whales. Discovery 



Reports, v, pp. 467-84, pi. iv, text-fig. i. 

 Peragallo, Maurice, 1921. Diatomees d'eau douce et Diatomees d'eau salee. Deuxieme E.xped. Antarct. 



Franfaise (1908-1910) commandee par le Dr Jean Charcot. Botanique, pp. 1-96, pis. ii-vi. 

 Petit, Paul, 1889. Diatomacees recolth dans le voisinage du Cap Horn. Mission Scientifique du Cap Horn, 



1882-1883, V, Botanique, pp. 111-140, pi. 10. 

 Schmidt, A., 1890-1902. Atlas der Diatomeenkunde, 1-72, Leipzig. 

 Stanbury, F. a., 193 1. The Effect of Light of Different Intensities, reduced selectively and non-selectively, 



upon the rate of growth o/Nitzschia closterium. Journ. Mar. Biol. Assoc, n.s., xvii, pp. 633-53. 

 van Heurck, H., 1909. Diatomees. Resultats du Voyage du S.Y. 'Belgica' en 1897-9 sous le commande- 



ment de A. de Gerlache de Gomeroy. Rapports Scientifiques : Botaniques, pp. 3-126, pis. ii-vi. 

 Wheeler, J. F. G., 1930. The age of Fin Whales at Physical Maturity. Discovery Reports, 11, pp. 403-34, 



pi. V, text-figs. 1-5. 



