S4 AKT. 10. — T. TERADA. 



in the note, if that hole be closed ; the position is really equal 

 to position No. 1. 



The intermediate overtone f^ in position 18, is related to 

 the position No. 2, in the same way that No. 17 is to No. 1. 



The intermediate overtone c?2+ is due to the lower half of 

 the pipe. 



The probable defect of the instrument, lies in the too wide 

 interval of the notes between positions Nos. 1 and 2. This 

 inconvenience may be avoided if an additional hole be opened 

 below the gorobusi, corresponding to the little finger of the right 

 hand. I have calculated the position of this side hole for the 

 note di, for the syakuhati investigated, and obtained 6.0 cm. for 

 its distance from the open end. On opening the hole, the 

 desired pitch was obtained, and moreover, the overtone of the 

 new hole filled ujd the gap for the missing d*. Another con- 

 venience attained by this hole is that, by opening it, the 

 irregularity of the overtones is removed for most cases, since it 

 divides up the lower part of the pipe into short halves and 

 thereby hinders the interference due to that part. The best 

 position of the new hole, however, must be determined rather by 

 convenience in playing. From this point of view, a little higher 

 position of the hole, would be recommendable, so that the end 

 of the little finger might cover the hole without much efibrt. 



My best thanks are due to Prof. A. Tanakadate and Prof. 

 H. Nagaoka who have favoured me with kind encouragement 

 and useful suggestions, during the course of my investigations, 

 and also to Mr. R. Uehara who kindly placed his instrument at 

 my disposal for photographic reproduction. 



