i 
60 
KEYS. 
The keys are constructed in the usual way, and indented in the 
same way. In addition the system of Capital letters in used to pre- 
vent any conffusion (which often occurs in the old way). The letter 
“A” represents the first section of each main group such as the Hom- 
alobi. Each succeeding “A” represents a coorelative section of the 
same group. The letter “B” stands for the first subsection ot A, 
and every other “B” stands in the same relation, and so on with every 
letter used, each one is subsidiary to the letter which precedes it in 
the alphabet. 5A6B3C2D represents the second division of the third 
division 5f the sixth division of the fifth division of the main group. 
