Additional work was done on old and new fisheries com- 

 puter programs. 



DRAUGHTING 



The Unit provided maps, charts and figures for reproduction 

 in Branch reports and scientific journals. A map and aerial 

 photograph library is maintained. 



PHOTOGRAPHY 



The staff photographer provides all photographic docu- 

 mentation in the laboratory and in the field required by Re- 

 search Branch personnel. This is provided in black-and-white 

 or colour, still or in motion, employing macro, semi-macro, 

 and micro, photographic techniques. 



LIBRARY 



The Library has more than doubled its capacity during the 

 year. 



An accession list of new material is issued monthly. 



Title pages of 125 periodicals are circulated every two 

 weeks. 300 requests for photostatic reproductions are re- 

 ceived per month, and 150 requests for service per week; 

 and 80 inter-library loans are processed per month. 



MECHANICAL UNIT 



Some of the major projects completed by this Unit were: 



1. Beach algae removal equipment for provincial parks. 



2. Trailer-mounted telescoping tower for high-level selec- 

 tive cone harvesting. 



3. Semi-flexible seed bed scarifier for rough, rocky sites. 



4. Fish conditioning apparatus. 



5. Pocket-size increment-borer sharpening device. 



PUBLICATIONS 



Published during the year ending March 31, 1970. 



FISHERIES SECTION 



Bidgood, B. F. and A. H. Berst. Lethal temperatures for Great 

 Lakes rainbow trout. J. Fish. Res. Bd. Canada 26: 456-459. 



Budd, J. C, F. E. J. Fry and P. S. M. Pearlstone. Final observa- 

 tions on the survival of planted lake trout in South Bay, 

 Lake Huron. J. Fish. Res. Bd. Canada 26: 2413-2424. 



Christie, W. J. Possible influences of fishing in the decline of 

 Great Lakes fish stocks. In: Proc. 11th Conf. Great Lakes 

 Res. 1968:31-38. 



Dechtiar, A. Two new species of monogenetic tramatodes 

 (Trematoda: Monogenea) from nasal cavities of catosto- 

 mid fishes. J. Fish. Res. Bd. Canada 26: 865-869. 



Ferguson, R. G. Key to salmon and trout in the Great Lakes. 

 Ont. Dept. Lands & Forests, Res. Br., Res. Inform. Paper 

 (Fish.) No. 36, 16 pp. 



Fraser, J. M. and F. VV. H. Beamish. Blood lactic acid concen- 

 trations in brook trout (Salvelinus fontinalis) planted by 

 air drop. Trans. Am. Fish. Soc. 98(2): 263-267. 



Kwain, VV. H. and H. R. MacCrimmon, Age and vision as fac- 

 tors in bottom coloui" selection by rainbow trout, Salmo 

 gairdneri. J. Fish. Res. Bd. Canada 26: 687-693. 



Kwain, W. H. and H. R. MacCrimmon. Further observations 

 on the response of rainbow trout, Sa/mo gairdneri Richard- 

 son, to overhead light. ). Fish. Res. Bd. Canada 26: 3233- 

 3237. 



Leach, J. H. Seasonal limnology of an excavated pond in 

 southern Ontario. Prog. Fish. Cult. 31: 11-19. 



MacCrimmon, H. R. and W. H. Kwain. Influence of light on 

 early development and meristic characters in the rainbow 

 trout, Salmo gairdneri. Can. J. Zool. 47: 631-637. 



McCombie, A. M. and A. H. Berst. Some effects of shape and 

 structure of fish on selectivity of gillnets. J. Fish. Res. Bd. 

 Canada 26: 2681-2689. 



Reigier, H. A., V. C. Applegate and R. A. Ryder. The ecology 

 and management of the walleye in western Lake Erie. 

 Great Lakes Fish. Comm., Tech. Rept. 15, 101 pp. 



FORESTRY SECTION 



Burger, D. Calcium release from 11 minerals of fine-sand 

 size by dilute sulfuric acid. Can. J. Soil Sci. 40(1): 11-20. 



Burger, D. Relative weatherability of calcium-containing 

 minerals. Can. J. Soil Sci. 40(1): 21-28. 



Burton, D. H., H. W. Anderson and L. F. Riley. Natural re- 

 generation of yellow birch in Canada. In: Birch symposium 

 proceedings. USDA, Forest Serv. N.E. Forest Exp. Sta.: 

 55-73. 



Fowler, D. P. and C. Heimburger. Geographic variation in 

 eastern white pine, 7-year results in Ontario. Silvae Genet. 

 18(4): 97-144. 



Glerum, C. Vitality determination of tree tissue with kilo- 

 cycle and megacycle electrical impedance. For. Chron. 

 46:63-64. 



Glerum, C. The influence of temperature on the electrical 

 impedance of woody tissues. Forest Sci. 15(1) : 85-86. 



Haddow, W. R. The spread and development of white pine 

 blister rust in Ontario. Ont. Dept. Lands & Forests, Res. Br., 

 Tech. Ser. Res. Rept. No. 86, 57 pp. 



91 



