APPENDIX 



581 



I. The student should not fail to make himself acquainted with 



the many interesting facts which may be leamt from 



The Pigeon. watching pigeons, concerning, for instance, the nesting, 



care of the young, and their feeding ; the use of the 



oil gland ; moulting ; the use of the wings and of the tail 



Fig. 415. — The principal arteries of a lizard. 



m., Anterior mesenteric; c. t cceliac ; c.a., carotid arch; c.c, common 

 carotid; cm., cosliaco-mesenteric ; cd., caudal; d.ao., dorsal aorta ; 

 d.B., ductus Botalli ; /., femoral or external iliac ; l.ov.> left ovarian ; 

 p., pulmonary; p.m., posterior mesenteric; r., renal; r.h. r right 

 hepatic; the left hepatic is a branch of the cceliac; r.crv., right 

 ovarian ; scl., subclavian ; sci., sciatic or internal iliac ; sy.a., systemic 

 arch ; tr.l., tracheo-lingual. 



in flight and gliding, steering and alighting ; courting ; 

 challenging, and fighting with beak and wing. 

 2. Of external features, note the head, neck, trunk, very short 

 tail ; beak, cere, nostrils ; eyes, with three eyelids ; ear 



