Worthington & Cole. 



Phil. Trans., A, Vol. 194. 



Fig. 5. 



Series XIV. 

 Fig. 1. 



Series XII. 

 Fig. 2. 



Fig. 3. 



Fig. 6. 



Series XV. 

 Fig. 2. 



Fi. 1. 



Series XVII. 

 Fig. 2. Fi K . :. 



Fig. 4. 



