xxiv INTRODUCTORY 
to the feeding habits and nourishment of the salmon, 
as to the records of growth, migrations, and spawn- 
ing to be read from the study of the scales, as well 
as inquiries into allied and auxiliary subjects, have 
greatly added to the data now ready to hand. 
My endeavour in the present volume is to draw 
together results which we have received during those 
recent investigations, but which have been set forth 
in isolation, not set forth at all, or, what is perhaps 
much the same in result, printed between the blue 
covers which so successfully conceal a Government’s 
information. 
