158 Photography for the Sportsman Naturalist 



into play to reflect light into the hole and give 

 perfect illumination to the contents. Care must 

 be observed not to make the illumination too 

 intense, or otherwise the effect of a cavity will 

 be lost 



To those who are ambitious enough to wish to 

 use their cameras on the cliff breeders I am very 



much afraid 

 I can give no 

 directions, as 

 I will freely 

 confess to 

 never having 

 done any of 

 it ; and my 

 desire to dan- 

 gle at the end 

 of a rope over 

 a hundred 

 feet or more 

 of empty space is, I fear, not great enough ever to 

 lead me to attempt it. The Kearton brothers of 

 England have, however, done much of it and, 

 through their utter fearlessness, have accom- 

 plished some wonderful results. Their methods 

 are all fully described in their admirable book, 

 " Wild Life at Home," and should any one desire 

 to emulate them, I should advise him to obtain 

 this book. 



Nest of Bank Swallow. 

 Bank cut away to show eggs. 



