6 
pubescence and superficial glands, and the structure 
he 
it is necessary to test the degree of lignification of 
certain cell-walls, to determine the nature of secretions, 
and to examine, both morphologically and ee 
the ao contained in the s specimen, which is com- 
pared in each of these respects with duthents 
stan sds 8. 
china this practical botany of medicines Le 
a more or less intelligent conception of bota 
classification, but is itself the app feation of a etal 
kill. Quite 
teeetation. ot many years since 
another successful teacher of the same subject laid 
down the essential thing as being “that the course 
of specimens illustrating the same things, and closin Se 
his course by an exercise in which a lot of mix 
