Haj-leujh hSixLgwicte. 
1. 
Phil. Treatu. 1884". Plate 17. 
Fig. 
•3 
8 
Two dteVLSVorhs to orve ynTLLixj y-ouara . 
Two dTvisioyiyS to orve, rnTnjLLte, . 
We stlTewjnaii. & C° litk.. 
