MUSEUM OF NATURAL HISTORY. 



11 



Notes for these acr-ounts are taken fi-om Charles Sprague Sargent's "Silva of 

 North America,'' a choice and extensively illustrated work of fourteen volumes in the 

 Catharine L. Howard Library in the Science Building. This library is open to the 

 public from 1 to 5 p. m. in winter, 2 to 6 p. m. in summer. 



Trees described.— T\\Yee-i\\oi-ned Acacia or Honey Locust {Gleditschia triacanthos) 

 in the Bulletin for December, 1906. 2. Kentucky Coffee Tree {Gymnocladus dioica) 

 in January, 1907. 3. Yellow Locust or False Acacia (Robinia pseudacacia) in 

 February. 4. Sycamore or Buttonwood {Platamis occidoitalis) in March. 5. Tulip 

 Tree or Yellow Poplar (Liriodendron tuUpifera) in April. 6. Catalpa in May. 7. 

 Gingko in June. 8. Maples in August-September. 9. Hackberry or Sugarberry 

 (Celtis occidentalis) in October. 10. Ailanthus, Tree-of-Heaven, or Chinese Sumac 

 (AilavtJtus glar\d\dosa) in November. 11. Tupelo, Pepperidge, Sour Gum or Black 

 Gum {Nyssa sylvatica) in December. 12. Yellow-wood, Virgilia {Cladrastis lutea) in 

 January, 1908. 13. Pines: (a) White Pine {Piiius strobns) , (b) Pitch Pine (Pinus 

 rigida), (c) Red or Norway Pine (Pihiis resivosa) in February. 14. Black Walnut 

 (Jufflans nigra) in March. 15. White Poplar or Silver-Leaf Poplar {Populus alba) 

 in April. 16. Larch, Tamarack, Hackmatack. Juniper (Larix Americana) in May. 



