PREFACE. XI 



largely helped by F. Day, C.I.E., F.L.S., down to the hour of 

 publication. 



I take this opportunity of acknowledging the great assistance 

 I have received from my wife, to whose untiring energy the 

 Fishery owes much of its present prosperity, and this book its 

 existence. 



J. R G. MAITLAND. 

 STIRLING, N.B., October 1886. 



