DEPARTMEXT OF THE ^'ATAL SERVICE 



In both types the averages for each year eUiss are very similar. In these tables the 

 range of growth in the different years is much the same as in previous years and the 

 curve of growth similar, little is to be gained bv introducing these data for the vear 

 1917. 



The weights of all these fish were taken and hence it was possible to get the 

 approximate ratio of weight to length. As the absolute weights would be of little use 

 for comparison, the average weight of all the specimens of a certain length in each 

 type and year class, male and female, was taken and from these a table was prepared 

 to show the ratio of weight to length. As in many cases, especially towards the extrem6\ 

 of range, the number of specimens for any one length is very small, sometimes only 

 one, too small for getting a proper average, the figures show much irregularity and 

 allowance must be made for this as the figures were put in the table just as they were 

 worked out. The number of specimens for any length in any group can be obtained 

 by referring to the previous tables. 



TABLE SHOWING RELATION OF WEIGHT TO LENGTH. 

 Sea Type. 



