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THE NATURALIST'S GUIDE. 



mean that the nest is No. 29, and the egg is the No. 4 of 

 that nest ; both of these numbers will refer to a book, 

 where all the particulars of the finding of the nest, the 

 locality, measurements of the nest, eggs, etc. in inches, 

 are recorded. 



The method of preparing a book like that referred to 

 above may be seen in the following specimen : 



02 







O 



