Trans. N.Z. Inst., Vol. XLIX. 



Plate XXXII. 



r. 



> H i 





i L 



f^ 



c 



X 



<N — j= 



= 3 



» -' 



s: s 



o o 



o o 



pa, O C -~- 



s fits 



x DC *- 



'I 1 = 



X DC o 



S 5 O 



C 3 i- 



C ~ ~ 



X QQ § 



^fe-^ 



1«« p. J.3^.J 



