LOVK's ilEINIE. 



05 



when the active wing is open, the space between it and 

 the body. I'nt the plumes of the two great fans, a and 

 B, are set into the bones ; in Fig. 8, farther on, aie 



Fia 6. 



:b 



shown the projecting knobs on the main arm bone, set for 

 the reception of the quills, which make it look like the 



