THE METHODS OF THE BIRD PHOTOGRAPHER 27 



surroundings, are of interest in connection with the 

 biographies of many birds. 



Seasons. The camera permits us to make so ex- 

 act a record of the rise and fall of the year, as it is 

 registered by vegeta- 

 tion, that we can actu- 

 ally compare existing 

 conditions with those 

 which prevailed at any 

 previous time. Com- 

 pare, for example, the 

 series of four pic- 

 tures 8 " 11 here presented, 

 all made from the same 

 point of view, in order 



to appreciate how graphically seasonal changes may 

 be shown by the camera. In this instance, photog- 

 raphy is of more service to the botanist than to the 

 ornithologist ; but every student of migration knows 



how closely related are 

 the appearance of cer- 

 tain birds and flow- 

 ers, and will readily 

 appreciate, therefore, 

 the value of a series 

 of photographs of sev- 

 eral different subjects, 

 taken at short inter- 

 vals, and showing the 

 changes in vegetation due to the approach of sum- 

 mer or winter. In connection with such related 

 phenomena as temperature, rainfall, and weather, 

 these pictures form as accurate a record of the sea- 



9. Summer. 



