20 



THE NESTING SEASON. 



Hints on keeping Note-Books and Jonrnals. — The necessity of a 

 well-kept journal can not be too strongly urged. Specimens may be 

 duplicated, but no one can ever see with your eyes. Do not attempt 

 to trust to your memory — a willing servant of the mind too frequently 

 imposed upon. It may receive and retain one impression clearly, but 

 as others are added the earlier ones lose their distinctness or become 

 entirely effaced. 



The system adopted for recording notes should be simple to keep 

 and easy of reference. The one here recommended has stood the test 

 of ten years' experience. After returning from the field I enter in my 

 " roll-book," at once, a record of the weather, temperature, direction 

 and force of the wind, locality visited, time of starting and returning, 



