used in Playing Reed Instruments. 



273 



Results of Experiments on the Clarinet. 



The instrument used for this purpose was a B[? Boehm 

 system Clarinet tuned to the Low Pitch, and made by 

 Hawkes & Son of London. A soft reed was used. 



The results of scales extending through rather more than 

 three octaves are given in Table I., and these results are 

 graphically represented in PL III. headed " Clarinet." 

 It will be seen that two sets of figures are given and two 

 curves, one when playing as loudly as was consistent with 

 a proper tone and the other when playing very softly. 



Table I. 

 Pressures for Scales on Bj? Clarinet. 



Notes. 



Inches of Water. 



Forte. 



Piano. 



E 



15-5 

 15 



14-5 

 14-5 

 14 

 14 



14 

 13-5 

 13 

 13 

 13 

 14 

 13-5 

 13 



12-75 

 1225 

 125 

 12 



11-75 

 11-5 

 105 

 10-5 

 10 5 

 95 



6-5 



6-25 



6-25 



6 



6 



6 



6 

 6 

 6 

 5-75 



5-5 



7 



7 



7 



6-5 



6-5 



6-5 



6 



5-75 



5-75 



6 



5-5 



5 



4-25 



Fjf 



G3 



A 



B 



C# 



(D) 



Dfi 



E 



F£ • 



G? 



A 



B 



CJt 



Dfl 



E 



FjJ 



Gtt 



A 



B 



cs 



DJf 



E 



Efi 



Gtt 





Mezzo-forte playing was also tried, but the results were 

 found to be more uneven owing to the difficulty of main- 

 taining the same degree of moderate intensity throughout 

 a particular experiment. The figures given were con- 

 sidered the most representative after a number of experi- 

 ments. In the graphical representation of the results the 

 Phil, Mag. S. 6. Vol. 27. No. 158. Feb. 1914. T 



