PLATE 8.-THE OAKS. 



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, Stammate 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. 



