339 



FIG. 334- Air sacs of duck, from Wiedersheim. Aa, anonymous, Ap, pulmonary 

 artery; C, cervical sac; CJ, coracoid ; /), intestine; Dtha, diaphragm; F, furcula; 

 //, heart ; lAbdS, left abdominal sac ; led, !es, ligamentum coronarium hepatis ; /, s , 

 lung ; Ifcd, lig. coraco-furcularis ; //,, liver ; Ish, suspensor of liver ; 717, stomach; Oe y 

 (rM)]>hagus; /', pcctoralis; />, pectoral sac; pa, artery to, /^, vein from, pectoralis ; 

 '/., livrr ; rAbit'S, right abdominal sac ; S, subclavian ; s, partition between the ante- 

 rior diaphragmatic and the supracoracoid sac; .^, between anterior and posterior dia- 

 phragmatic sacs; 7\ trachea; r, anterior wall of supracoracoid sac; F<7, anonymous 

 vein ; *, entrance of bronchi into lung ; t. anterior, tt, posterior diaphragramatic sac. 



