72 



The following- references have not been classified above, for 

 various reasons, either because they are too general in character, 

 because I have not seen them, or for other reasons. 



Fleutiaux 1. 



Horner 1. 



Johnstone 2. 



Kotinsky 1. 



Mead 1, 4. 



Newlands 1. 



Olliff 1. 



Perkins 6, 8. 



Ridley 1. 



Terry 1, 5. 



Turnbull 1. 



Turner 1. 



Whitney 2, 3. 



