TITLES OF PAPERS READ BEFORE SECTIONS. 365 



'' Recent Discoveries in the Life History of Sheep Tick, and Their 

 Important Bearing upon Legislation for its Eradication." R. 

 A. Black. 



(1), " Replacement of N'ative Grasses by Introduced Herbage 

 in the Wheat-growing Districts of I^ew South Wales " ; 



(2) "A Simple Quadrat Method of Recording Vegetative Obser- 

 vations." E. Break WELL, B.A., B.Sc. 



" Influence of Varying Climatic Soil Conditions on the Milling 

 Quality of Red Fife Wheat, and on the Chemistry and 

 Baking Strength of its Flour." A. McTaggart, B.Sc.(Agr.). 



(1) "Methods of Maize Breeding for Improvement of Yield"; 



(2) "A New Method for Determining Yields of Experimental 

 Plots." H. Wenholz, B.Sc. (x\gr.). 



" Influence of Meteorological Variations on Weight of Bagged 

 Wheat." F. B. Guthrie, F.I.C. 



(Published in Agricultural Gazette of New South Wales, March, 

 1921, Vol. 32, pp. 200-202.) 



" Results Obtained by the Planting, and the Exploitation of the 

 Remarkable Pine (Pinus insignis) in South Australia." W. 

 Gill, F.L.S., F.R.H.S. 



(Published in the Journal of the Department of Agriculture of 

 South Australia, June, 1921, folio 927.) 



" Decomposition of Cyanide of Potassium by Sulphuric Acid, and 

 its Bearing on the Use of Prussic Acid for Fumigation Pur- 

 poses." Geo. Harker, B.Sc. (Syd.), D.Sc. (Lond.). 



SECTION L. 



Presidential Address : " The Development of the Present Con- 

 ception of Immunity." Professor H. A. Woodrfff, 



M.R.C.V.S., M.R.C.S., L.R.C.P. 

 " Changes Affecting the Breeding of Our Live Stock." A. E. 



Mansell. 

 " Researches into the Seriological Diagnosis of Pleuro-pneumonia." 



G. G. Heslop, M.V.Sc.,"D.V.H. 

 " A Record of the Occurrence of Bacillary White Diarrhoea of 



Chicks in Australia." H. R. Seddon, B.V.Sc. 

 " The Etiology of ' Black Disease '." Sydney Dodd. D.V.Sc, 



F.R.C.V.S. 

 " The Problem of Abortion Disease in Bovines." H. R. Seddon, 



B.V.Sc. 

 " Milk Vitamines in Diet Deficiency Diseases in Live Stock." F. 



E. Place, B.Sc, B.V.Sc. 

 (Published in Journal of Agriculture , South Australia, May, 1921.) 

 " Methods of Control and Eradication of Ticks in United States 



of America, and their applicability to Australia." J. A. 



GiLRUTH, D.V.Sc. 



