Plate 11. 



Zygophylax chazaliei, page 15. 

 Figures from camera drawings finished by J. H. Emerton. 

 Fig. 1. A colony, natural size. 

 Fig. 2. A part of the main stem ; a, pinnae, x 60. 



Fig. 3. Part of the central tube from the main stem ; dissected after maceration in cold 

 KHO. x 60. 



Fig. 4. Part of the central tube after maceration in boiling KHO. x 116. 



Fig. 5. Showing the mode of branching of the central and of one of the peripheral tubes 

 x 60. 



