242 



PEOF. W. K. PAEKEE ON THE 



There is no finality about work of this kind ; all the old work serves but as the begin- 

 ning of new ; and I have sought here rather to offer suggestions than to repeat the detailed 

 facts: — they have but little interest except as links in a long and tortuous chain; 

 they are not things on which we can rest — they serve, however, as stimulants to further 

 research. 



Editoriai, Note. — Owing to the lamented death of the author of this paper before it 

 was in type, and to the illegibility of his handwriting, a few errors in the lettering of the 

 Plates have escaped correction. They were lettered from the original figures, and then 

 printed ofi'; but Prof. W. N. Parker, who has been good enough to revise the proof-sheets, 

 has found it necessary to note the following errata : — 



Plate XXII. For up read u.p. 



Insert reference-liue from cr to cartilage just below. 

 Insert reference-line from dg^~''^ to digits. 

 For cw read c.u. 



XVI.— LIST OF ABBEEVIATIONS. 



ac. Acetabulum. 



ag. Angulare. 

 al.e. Aliethmoid. 

 al.s. Alisphenoid. 

 al.sp. Aliseptal, 



ar. Articulare. 



at. Atlas. 



au. Auditory capsule. 



aw. Axis. 

 b.hy. Basihyal. 



br' . Cerato-branchial. 

 c. Centrum and Centrale. 



cd.v. Caudal vertebrae. 

 c.hy. Cerato-liyal. 



cl. Clavicle. 

 c.mc, Carpo-metacarpus. 

 cn.e. Cnemial epiphysis. 

 «•. Coronoid and Coracoid. 



cr. Cervical rib. 

 cr.y. Crista galli. 



c.tr. Comua trabeculae. 



c.u. Centralo-ulnare. 



c.v. Cervical vertebrae. 



d.c. Distal cai'pal. 



