with a notebook, and make copious notes, and 
sketches where possible, of everything that appears 
to be typical and essential. In a _ short time 
you will probably have acquired considerable know- 
ledge of many characteristics that had previously 
escaped your observation, and which no amount of 
theorising could have taught you, besides gaining a 
good deal of confidence, or faith, in yourself. It is 
only by persistent and patient study that success 
is finally attained, and the greater your knowledge 
of nature, the better your work will be. 
II 
