APPENDIX. 



Note A. 



The following Table will serve to illustrate the remarks on the 

 change of pitch, and, in fact, is the one from which Fig. 18. was con- 

 structed. The pitch of the reed = 6.6 inches or g' nearly. I have in all 

 the Tables denoted the pitch by the actual length of the pitch-pipe, as 

 the most accurate method ; all the measures are in inches and decimals. 



Table II. 



