JOHANNES MtiLLER 

 ON CERTAIN VARIATIONS 



IN THK 



VOCAL ORGANS 



OF THE 



PASSERES 



THAT HAVE HITHERTO ESCAPED NOTICE 



THE TRANSLATION 



BT 



F. JEFFREY BELL, B.A. 



EXHIBITIONER OP MAGDALEN COLIEQE, OXPOED 



EDITED, WITH AN APPENDIX 



BY 



A. H. GAREOD, M.A., F. R. S. 



FELLOW OF ST. JOHN'S COLLEGE, OAMBBIDGE 



AT THE CLARENDON PRESS 



M DCCC LXXVIII 

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