Show Parallel Growth oi Bird and Human Music In Harpers Magazine for August Henry W Oldys of the United States Biological survey has an intensely interesting in-teresting article showing that bird music mu-sic Is developing and giowing on lines parallel to those In our own musical development The student of the philosophy l of music be says in particular will feel satlsllcd that from the apparently fortuitous for-tuitous manner In which we have acquired ac-quired our present musical standard the development of bird music must necessarily be moving In another direction direc-tion and along different lines But however cognent the grounds for this belief may seem Investigation shows that there is I striking evidence that the evolution of bird music ban paralleled the evolution of human music and idoal that both arc tending toward the same dalI has been denied and affirmed frequently fre-quently that the birds nee the Intervals Inter-vals of our melodic ccalc Most writers writ-ers that hold to tho negative arc inclined in-clined to except one 01 two birds such as the European miekoo which they usually stale sings a true third I this were the only case notel It would still go far to support the Idea of a relationship between the development of < human and avlin music but to he i cuckoo must be added various other birds The Carolina wren 3or35jar sow fieldspanow chickadee vooU thruBh chcwlnk wondpewce tufted titmouse bluegray gnatcatcher and robin are a rnndow few of those that occasionally nt lease use the inter rain of our scale I do not mean by this to asccr that their notes never vary by a shade from the exact tones by which oar scale I Is aclentincully constructed con-structed that tried for example by a resonator such an Is used to I Pst overtones over-tones they vould bo found to correspond corre-spond identically In number of viora lions with the noici of ih I ilruo scale buf r do mean to say that their tores ore usually co close to the tnen of our scale ns to satisfy the ordinary requirements re-quirements of < niuslril ear They are qulle as true aa those rrqrierally uttered ut-tered by human throats IlnncVst may be staled with cohfldenre tat In their choice of Intervilo such h1rieisI have mentioned are often governed by requirements ofi our mofern tcale |