608 
MR, W. K. PARKER ON THE STRUCTURE AND 
reference to the transversely vertical sections, and the rest of the skull will have its 
meaning greatly elucidated by the series of these illustrations (Plates 44 and 45). 
The 1st of these (Plate 44, fig. 1) is in front of the outer nostril ( e.n .), it shows the 
terminal divergence of the trabeculae ( c.tr.) into “cornua;” the height of the septum 
up to the front of the face, and the size aud sweep of the nasal roofs ( ol.c .), as they turn 
in with a sigmoidal bend, below the recess in front of the outer aperture (e.n). 
On these roofs lie the nasals (n), which dip between them; below, we see the fore¬ 
most part of the maxillary ( mx .), and the lateral and median (palatine) parts of the 
premaxillary (px. ); also, on each side of the lower part of the septum nasi the septo- 
maxillaries ( s.mx.) are cut through, and on each side of the cornua (c.tr.) the vomers (v). 
The 2nd section (fig. 2) is through the outer nostril (e.n); there the nasal roof is 
seen partly severed below, and both the median palatine processes of the premaxillary 
and the cornua trabeculae are at their thickest part. 
The 3rd section (fig. 3) is behind the nostrils ; here the deep septum (s.n.) is thin 
below, behind the diverging cornua trabeculae; but it thickens where it is clasped by 
the increasingly wide septo-maxillaries, below the nasal channel. 
The nasal wall thickens greatly below, where it is applied to the outer face of the 
nasal gland (n.g), which is cut through in this and the next sections. 
Below we see a pair of cartilaginous bands, in section, that can be traced to the ant- 
orbital region (figs. 3-9, n.f). 
This extension of the back of the capsule forwards to the front passage, as an 
obliquely placed tape of cartilage, reappears again in certain ancient types of birds, 
e.g., in Turnix and in Chasmorhynchus. (“ kEgithognathse,” Part I., Trans. Zool. 
Soc., vol. ix., plates 54 and 62.)'" 
The nasal wall is beginning to bend inwards to make room for a mass of sub¬ 
cutaneous follicles, which become collected into a glandular mass inside the inferior 
turbinal (see figs. 6 and 7). 
The nasals, septo-maxillaries, vomers, and maxillaries, are all larger in this 3rd 
section, and the latter shows a new tooth inside of the old one, at the margin. 
The 3th section can only be interpreted by the help of what was made out in the 
simpler and less specialized skull of the Snake (“Snake’s Skull,” Plates 32 and 33, 
pp. 411-414); and, indeed, the worker has to borrow largely from the Serpent, if he is 
to have understanding to count the number, and to tell the meaning of the parts in 
this small skull, which is a fulfilment of all that existed before it, and a prophecy of all 
that will come after it, in the Vertebrate cranium. 
The trabecular or lower portion of the septum (s.n.) is thickened, but forms a sharp 
keel below ; the nasal walls (ol.c.) bend in still more than in the last, and then become 
abruptly thick below, where they have become confluent with a large, thick, half-coiled 
* That the Bird is a sort of morphological “ Imago ” to the more arrested, quasi-pupal Lizard, will only 
be questioned by those whose knowledge of the structure of these creatures is in a very rudimentary state ; 
or by those, “ who, having eyes, see not.” 
