598 TRANSACTIONS OF SECTION D. 



brilliant work of Schaudinn. The results obtained in these culture experiments 

 show that the same result may be brought about by artificial means, and that a 

 new cycle may be inaugurated by the mere change in chemical composition of the 

 surrounding medium. But they also teach that this result cannot be continued 

 beyond certain limits, and indicate the probability that parthenogenesis has only a 

 limited success, acting merely to postpone or counteract what Hertwig has happily 

 called physiological death. Finally the experiments teach that both physiological 

 and germinal death in protozoa is bound up with the exhaustion of vitality in 

 definite substances in the cell, so that we are as much justified in speaking of 

 germinal and somatic protoplasm of the protozoan cell as of germinal and somatic 

 cells of metazoa. 



2. Report on the Occupation of a Table at the Zoological Station, Naples. 



See Reports, p. 329. 



3. Reiwrt on the ' Index Animaliuia.' — See Reports, p. 314. 



4. Rejjort on the Colour Physiology of the Higher Crustacea, 

 See Reports, p. 325, 



5. Interim Report on the Freshwater Fishes of South Africa. 

 See Reports, p. 326. 



6. Sixteenth Report on the Zoology of the Sandwich Islands. 

 See Reports, p. 315. 



7. Report on the Madreporaria of the Bermuda Islands. 

 See Reports, p. 325. 



8. Report on Zoology Organisation. — See Reports, p. 326. 



9. Report on the Probability of Ankylostouia becoming a Permanent 

 Inhabitant of our Coal Mines in tlie event of its introduction. — 

 See Reports, p. 315. 



10. Report on the Occupation of a liable at the Marine Laboratory, 

 Plymouth. — See Reports, p. 325. 



11. Interim Report on the Effects of Sera and Antisera on the Developiment 



of the Sexual Cells. 



12. The Milk Dentition of the Primitive Elephants 

 By Dr. C. W. Andrews, F.R.S. 



