INTRODUCTION 



" cfoz to lie a ihatuzaii.'it, i/ou maun 

 ncqtnwi natuz' . 

 Iicxd. 



Observation is at the basis of all 

 scientific work, and is itself both a 

 Science and an Art, although, after 

 all, it is nothing more mysterious 

 than the faculty of keeping open at 

 the same time both the eyes and the 

 mind. 



This little book does not pretend 

 to teach it — perhaps no book can do ' 



that. It does attempt, however, to 

 save you valuable hours and fleeting 

 opportunities by reminding you from 

 time to time throughout the circle of 

 the year what is doing then in the 

 living world, by giving you a memo- 

 randum of some things for which 

 you ought at that moment to be on 



the lookout, lest their brief period HX^hat to dec and when to .)c 

 pass before you learn or remember 

 that this is their appointed season. 

 In this respect it is a guide to study 

 out of doors — a calendar of Nature's 

 annual cycle of birth, career, death, 



