22 president's address. 



from milk increases the electrical conductivity. That, in a given 

 sample of milk, the increase of conductivity is directly propor- 

 tional to the volume of fat removed. And that the increase of 

 conductivity due to the removal of a given amount of fat is not 

 the same in different samples of milk. The second paper is a 

 note on the temperature of Echidna aculeata, in which the ap- 

 plication of Galton's graphic method of statistical analysis to the 

 results recorded in an earlier paper are discussed. This will he 

 found in Part 4. From this, it is shown that the temperature- 

 regulating mechanism of Echidna is only effective while the body- 

 temperature lies between 27 , 6°C, and 32 - 6°C; and that, outside 

 of these limits, Echidna behaves as a poikilo-thermal animal. 

 Dr. Wardlaw has also continued his investigation of the soluble 

 salts of milk by the direct (electrometric) method. He proposes 

 to complete his work on the variability of cows' milk; and also 

 to investigate the action of rennin in the clotting of milk — a 

 question of the greatest importance in connection with the 

 digestion of milk in the stomach. 



In response to the Council's invitation for applications for four 

 Linnean Macleay Fellowships, 1919 20, six were received. I 

 have the pleasure of making the first public announcement of the 

 Council's re-appointment of Dr. J. M. Petrie, Dr. R. J. Tillyard, 

 and Di\ H. S. Halcro Wardlaw to Fellowships in Biochemistry, 

 Zoology, and Physiology; and of the appointment of Miss Vera 

 Irwin .Smith, B.Sc, to a Fellowship in Zoology — for one year 

 from 1st proximo. On behalf of the Society, especially now that 

 the gloom of war has abated, I have much pleasure in offering 

 them all good wishes that success may attend their efforts to 

 increase knowledge. 



Miss Irwin Smith joins the Society's research-staff with an 

 excellent University record, and with some experience in 

 research-work. She has held a Science Research Scholarship in 

 the University for two years and a half; and during that period 

 she has been engaged in the study of Nematodes and allied 

 worms. Her important paper on the Ghcetosomatidce was pub- 

 lished in the Society's Proceedings for 1917. In addition, she 



