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Show Parallel Growth ol Bird and Human Mmlc. In Harper', Magazine for August Henry . Oldys, nf the Cnlled Mates lllnloglcal survey, has nn Intensely In-tciesting In-tciesting article showing that bird music mu-sic is developing ml glowing nn lines parallel lo those In mu own music ul development 'The lu lent nf the philosophy of music," hesiys 'In puittctilur will feel satisfied that fioui the upparently fortuitous for-tuitous manner In which we have acquired ac-quired our pnsent musiinl stand ml the development of bird music must necess trlly be moving In another dlree Holt nnd along dltreient lines Hut, however cognent the grounds for till, belief may seem Investigation show. Hint there Is striking ovldeme that the evolution nf bird music has paralleled the evolution nf hiiinin music, and that both are trndlng tnwaid the same ideal It has been denied and affirmed frequently fre-quently that the birds we Ihe Inter-vnls Inter-vnls nf nur inelndlo scale. Must writer, writ-er, that hold tn the negative nre Inclined In-clined to except one or two birds, such ns the rurofenn nickno, which, they usually state, sings it true third It HiiJ were the only iure noted, It would rllll go fnl tn support the Idea of n tehitlonshlp between the elevelopment of human uud uvlnn music: hut tn the euckim must be ndded various other birds The Carolina wren song spar-sow. spar-sow. Held sparrow, chickadee, wood thrush chewlnk, wood-pevvee. tufted titmouse, blue gtuy gnat eatiher und mbln me k randovv few of those that occasionally at lease, use the Interval, Inter-val, of our scnle. I do not mean by thl, to nsseit that thel- notes never Miiy by a shade from the exact tnnes by which our scnle In silentKlcilly constructedthat con-structedthat tried for example hy a lesnnator m h as Is used tn test over-tones over-tones they woull he found to correspond corre-spond Identically In number nf vlbrn-tlnns vlbrn-tlnns with the notes of the true scale, but I do menu lo my thai Ihelr tnnes nle usually so close tn the tone, nf our scnle ns to satisfy the ordlnnry requirements re-quirements of a musluil ear They nre quite ns true nn those generally uttered ut-tered hy human throats Heme It may be slnled with confidence Hint In Ihelr rholce of Interval, ,tu h bird, a, I hive mentioned nre often governed In the requirements nf nur modern scale " |