PLATE 8. THE OAKS. 



1. Red Oak, leaves and fruit. 2. Pin Oak, leaves and fruit. 3. White Oak, 

 leaves and fruit. 4. Red Oak, flowering twig: A, Pistillate flowers; 

 B, Staminate flowers; C, Partly grown acorns of preceding year. 5. Street 

 of Pin Oaks: Pennsylvania Avenue, S. E. , at Thirteenth Street, Washing- 

 ton, D. C. Nineteen years old. 



