1902-03.1 



CONTENTS. 



Trinidad .......... 



Barbados ......... 



General Changes of Level of Land and Sea 



Photography in Natural Colours 



J. S. Plaskett, B.A. 



Joseph Brant in the American Revolution .... 

 LiEUT.-CoL. E. Cruikshank. 



The Beginning of Municipal Government in Ontario 



Prof. Adam Shortt. 



Sawdust and Fish Life ........ 



Prof. A. P. Knight, M.A. , M.D. 



Historical ......... 



Experimental ........ 



The Sinking of Sawdust ....... 



Extracts from Sawdust ...... 



Source of Poison ........ 



Pulp Industry, Beet Sugar Industry .... 



Strength of Sawdust Extracts ..... 



Extracts from Cedar (Ontario) ..... 



Extracts from White Pine ...... 



Other Wood Extracts ....... 



Extracts Quickly Soluble • . . . 



Fish at Mill-Ends 



A Stagnant Artificial Pool ...... 



Comparative Results ....... 



Experiments with Bark ....... 



Decaying Sawdust ....... 



Aromatic Compound . . . . 



Nutritive Relations ....... 



On the Bonnechere River ...... 



Conclusions, Acknowledgments ..... 



Appendix .......... 



The Bacterial Contamination of Milk and its Control . 



Prof. F. C. Harrison. 

 Contamination from the Fore-Milk ..... 



Contamination from Animal and Milker 



Methods of Prevention 



Milking Machines ' . 



Cleaning Milk by the use of a Gravel Filter . 

 Cleaning Milk by Centrifugal Force .... 

 The Bacterial Content of Milk before and after Separation 



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