TONGUE OF THE WOODPECKER. 



110 



the whole extent of its course, at c, d, e, f, and a 

 small portion of the left cartilage is seen at l. The 

 two cartilages form, at their junction with the 

 tongue, a very acute angle, slightly diverging as 



they proceed backwards ; until, bending downwards 

 (at c), they pass obliquely round the sides of the 

 neck, connected by a meinbrane (m) ; then, being 

 again inflected upwards, they converge towards the 

 back of the head, where they meet, and being en- 

 closed in a common sheath, are conducted together 

 along a groove, which extends forwards, along the 

 middle line of the cranium (e), till it arrives be- 

 tween the eyes. From this point, the groove and 

 the two cartilages it contains, which are now more 

 closely conjoined, are deflected towards the right 

 side, and terminate at the edge of the aperture of 

 the right nostril (f), into which the united cartilages 

 are finally inserted. In order that their course may 

 be seen more distinctly, these cartilages are repre- 

 sented in the figure (at d), drawn out of the groove 

 provided to receive and protect them.* A long and 



* S is the large salivary gland on the right side. 



