. The natural history of the cranes. Cranes (Birds). 88 Monograph of the Oranes. approaching them they evince more curiosity than timidity, looking down at the slightest noise, and apparently more anxious to obtain a full view of the intruder than for their own safety. They are almost invariably in pairs, and both birds can generally be ; I have seen and examined the tracheae sent by Prof. Grarrod's correspon- dent, but, being in a dry state, they do not give so good an idea of the wonderful complexity of the convolutions as the following woodcut, reduced from a lithograph accompa
. The natural history of the cranes. Cranes (Birds). 88 Monograph of the Oranes. approaching them they evince more curiosity than timidity, looking down at the slightest noise, and apparently more anxious to obtain a full view of the intruder than for their own safety. They are almost invariably in pairs, and both birds can generally be ; I have seen and examined the tracheae sent by Prof. Grarrod's correspon- dent, but, being in a dry state, they do not give so good an idea of the wonderful complexity of the convolutions as the following woodcut, reduced from a lithograph accompanying an article by Professor Pavesi, of the. OONTOLUTIONS OF TeAOHBA ON THE BkBAST OP KeEADDHBN's CeOW ShEIKB. University of Genoa, which appeared in the " Annali del Museo Civioo," vol. vi. That a bird the size of a missel-thrush should be able to produce a sound so loud as that described is, I think, a conclusive proof that the effect of the elongation and convolution of the trachea is the deepening of the tone and the increase of the loudness of the voice, which is the proposition that I have endeavoured to demonstrate; bat why certain birds should require such a deep-toned and far-reaching voice, which is not possessed by closely allied species, is a matter still to be Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Blyth, Edward, 1810-1873; Tegetmeier, W. B. (William Bernhard), 1816-1912. [London] Pub. for the author by H. Cox [etc. ]
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