A 



1931 ANNUAL REPORT, 1930 29 



progress in certain phases of fisheries' investigations, since we are deaHng with 

 elusive creatures, in a medium different from our own and outside anything but 

 our most indirect control. Furthermore, although the structure representing the 

 work accomplished is never completed, we are constantly working up to an ideal, 

 and the scientific attitude is reflected in the results achieved. 



A perusal of the following report and previous reports will show that satis- 

 factory and unmistakable progress has been made in the investigational and 

 practical sides of fish culture. 



The Staff 



The Branch has openings for a limited amount of service of an investigational 

 nature during the months of June, July, August and September, the permanent 

 staff being responsible for the development and encouragement of research in 

 fisheries throughout the year, either by the work of its own members or by 

 referring research problems to other interested bodies, such as the Ontario 

 Fisheries' Research Laboratory of the Department of Biology, L^niversity of 

 Toronto, since the fisheries' research work of the latter is chiefly confined within 

 the geographical boundaries of the Province of Ontario. 



Every year a limited number of qualified men is available from the biological 

 departments of the University of Toronto, Queen's University, Kingston, and 

 the University of Western Ontario, London. In connection with seasonal 

 appointments the attitude of the Branch is that only those who have the necessary 

 qualifications for fishery investigations of a technical kind are fitted to undertake 

 studies relating to the suitability of streams for fish-planting operations; the 

 natural productivity of waters; the efi^ect of natural and artificial barriers; the 

 success or failure of former plantings and, if possible, the reasons therefor; 

 technical studies regarding the culture of the difi'erent species of fish handled, 

 for example, food, water supply, disease, etc.; and others too numerous to 

 mention. "Necessary qualifications" may be taken to mean postgraduate 

 studies of fishery topics and practical field experience in connection with scientific 

 investigations; in other words, the correlation of experimental laboratory and 

 field work. Investigators who have served one year or more with the Branch 

 are encouraged to continue their field investigations and during an interim to 

 pursue such fishery courses and problems as will enable them to fulfil their duties 

 from year to year with an enlarged vision and knowledge of the subject and its 

 literature. 



The personnel of the seasonal field staff for 1929-30 was as follows: 



Gordon A. Adams, M.A., Department of Biochemistry, University of Western Ontario, London. 



Hugh D. Branion, M.A., Department of Biochemistry, University of Toronto. 



William R. Cameron, third year Biological and Medical Sciences, Department of Medicine, 



University of Toronto. 

 I. L. ChaikofT, M.A., Ph.D., M.D., Departments of Physiology and Biochemistry, University 



of Toronto. 

 W. \\ . Cook, B.A., Department of Biology, Queen's University, Kingston. 

 John D. Detwiler, M.A., Ph.D., Head of the Department of Applied Biology, University of 



Western Ontario, London. 

 William L. Dibbon, B.A., Department of Biology, University of Toronto. 

 Howard J. Dignan, F^.A., Ontario College of Education, Toronto (graduate in Biology, University 



of Toronto, '29). 

 Edgerton O. Ebersole, B.A., Department of Biology, Queen's University, Kingston. 

 A. C. Green, B.A. (Biological and Medical Sciences), University of Toronto. 

 Robert D. \\. Heard, ALA., Department of Biochemistry, University of Toronto. 

 A. H. Louden, ALA. (Biology and Chemistry), Queen's University, Kingston. 

 P. L. MacLachlan, B.A. (Biology and Chemistry), Queen's University, Kingston. 

 H. S. Pearce, third year Honour Biology, University of Toronto. 

 H. J. Perkin, third year Physiology and Biochemistry, University of Toronto. 



