SECTIONS. 57 
wing-like processes extend to the right and 
left of the nasal cavity, and form a horizontal 
partition, separating the nasal passages from 
the olfactory chambers. The horizontal laminz 
of the palatines complete the floor of the nasal 
passages. In the transverse section E, through 
the anterior region of the mawille, the section 
is bounded dorsally by the nasals, and the pos- 
terior portion of the dorsal part of the pre- 
maxille; the sides and floor are formed by 
the maxillz. Ventrally the maxille form a 
horizontal plate, anterior to which the floor is 
formed by the pre-manille. 
REFERENCES. 
FLOWER, W. H. & GADow, H. 
“An Introduction to the Ostcology of the 
Mammalia.” (Skull, pp. 116-242.) Lon- 
don, 1885. 
HUXLEY, ¥..-E. 
“A Manual of the Anatomy of Vertebrated 
Animals.” (Dog’s Skull, pp. 353-4.) 
London, 1871. 
MARSHALL, A. MILNES, & HURST, C. HERBERT. 
SX. Punto Course of Practical Zoolog gy.” (Rab- 
bit’s Skull, pp. 294-313.) London, 1895. 
MIVART, ST. GEORGE. 
“Fhe at.  tondon, 1881. 
MORRELL, G. H. 
“The Student’s Handbook of Comparative 
Anatomy, Pt. I. Mammalia.” (Sheep’s 
Skull, pp. 208-260.) London, 1872. 
