Manchester Memoirs, Vol. lix. (191 5), No. 4. 



11 



Similarly the chance (per million) for each square was 

 calculated, and is indicated by the upper set of numbers 

 in Fig. 5. 



T-*. r r* -, ■> , , • r 1 Length , Length 



pig. 6. — Graph showing the relation or the - =-r- and „ , 



d r t> Breadth Depth 



ratios among 1000 individuals of Relicularia Hneata (reduced 



from Fig. 5, q.v.). 



L 

















* 



D 













2'0 



- 



0'2 

 



1 

 1 



I 













1 9 





2 



7(9 



.? 













i-8 



- 







6 



8 













i'7 



- 



20 



7 



100 

 in 



34 

 46 



07 













10 





62 



JJ? 



103 



2 









!'5 



- 



60 



327 



108 



4 









i'4 





50 



IQ2 

 200 



50 

 32 



7 



1 









1 '3 





J 



*7 



5 



cry 









1*2 



- 



5 



17 



I 













I'l 



1 



1 



1 



! 



i 



! 







7 



*9 



IO IT 



I'2 



In /'/> 5 therefore, the numbers in italics represent the 

 theoretical chances per million of any shell falling in the 

 squares containing them, and the numbers in black type 



L 

 B 



