[ 70 :j 
really are on the pipes. And alfo thofe tones which come 
with moft eafe are wrote in minims, as 
thofe in the next degree, in crotchets, as 
thofe ftill more difficult, in quavers, as 
and the moft difficult in femiquavers, as 
I ft pipe 
3d and 5 th 
pipes unifons 
6th pipe 
8 th pipe 
2d pipe 
4th pipe 
tmf 
yth and 9 th ^3 
pipes imifons 
— 
Thefe tones are adapted to Englilli conjorf pitchy by the 
above notes. From whence it is evident, that an ex- 
pert performer may exhibit the following feries, and 
perhaps alfo the odtave to the fundamentabfez: 
'LV- 
delicet^ p~ though I could not, which feries is fuF- 
ficient for an infinite number of airs : 
m- 
In this feries the notes marked in minims,, being thofe 
which are eafieft to be founded, furniffi two fyftems 
which correfpond with the definitions of the diatonic 
2 and 
