206 



GENERAL ORNITHOLOGY. 



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Fig. 101. — Respiratory and vocal organs of the Ronk, Corims fnigilegus^ an Oscine PiiBserine bird ; rat. sizCf 

 after Macgillivray. 1. a, tongue; b, basi-brancliial, comnujiily culled ur*)-Iiy:il; c, c, bonis of liyoid bone; d,d, 

 genio-hyoid nmscleB; e, e, styio-liyoid muscles; /,/, cloido-liyoiil iinipcles ; fj, //, i, oesopbagus; .;', V'roventriculus; 

 or secretory stomacb ; k, gizzard, or gigerlum, the muscular stomach ; /, m, n, «, intestine, duodenum to rectum ; 



