OBSERVATION AS AGAINST UNDUE GENERALIZATION. 



1067 



Feeding — Continued . 



Time of taking. 



Abstinence during spawning sea- 

 son. 



Abstinence during cold periods. 

 Distribution : 



General. 



Seasonal (summer, winter, etc.). 



Migration. 



Arrival. 



Departure. 



Route of travel. 



Relative appearance of sexes. 



Schooling. 

 Reproduction: 



Age at maturity. 



Preliminary changes. 



Special male seasonal characters. 



Special female seasonal characters. 



Season of reproduction. 



Temperature of water. 



Preparation. 



Manner of sexual excitation. 



Nest-making. 



Parts assumed by sexes. 



Selection of place. 



Depth of water preferred. 



Manner of spawning. 



Reprodtiction — Continued. 



Frequency of spawning. 



Behavior of males and females 

 meantimes. 



Disposition of eggs. 



Number of eggs. 



Period of incubation. 



Retardation or acceleration of in- 

 cubation by temperature. 



Care of eggs. 



Care of fry. 



Period of care. 



Food of young. 

 Growth: 



Development. 



Successive changes. 



Size and characters, first year, 

 second year, third year, fourth 

 year. 

 Parasites. 

 Diseases. 

 Economical value: 



Value as food and otherwise. 



Manner of capture. 



Statistics. 

 Legends: 



Beliefs or sayings connected with 

 species. 



