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saaxai^mii'^ ni hionbt ivioi. 



Figure 56. — Minimum, average, and maximum length of young-of-the-year sea lamprey 

 ammocoetes collected at intervals during their first season of grov>rth. 

 An average growth curve has been fitted by inspection to the mean lengths 

 of the individual collections. The range and average size of newly-hatched 

 larvae is also shown projected over the period when the bulk of hatching 

 occurs. 



- 151 - 



