X boletín de la academia nacional de ciencias 



Orono, Maine. 



Ma'uie Jíjricitlttire Experimeni Stafioii. 



Bnlletiii. N. 200. 02. 03. 07. 10. 11. 13. 17. 20. 2:,. 



Philadelphia. 



Acadtmy of Xatural Sciences. 



Procecdings. Yol. 64. Yol. 65. Yol. 66, Part 1. 1912-14. 

 Franklin InstiUite. 



Journal. Yol. 174, N. 2-6. Yol. 17.5. Yol. 176. Yol. 177, N. l-ñ. Yol. 178, 

 N. 1-4. 1912-13-14. 



Rochester. 



Acadoni) of Sciences. 



Proceedings. Yol. 5, pp. 39-58. 



San Francisco. 



California Academy of Sciences. 



Proceediugs. Ser. 4. Yol. 1, pp. 431-446. Yol. 2, pp. 1-202. Yol. 3, pp. 

 187-454. Yol. 4, pp. 1-13. 



St. Louis. 



Missouri Jiolanical Garden. 

 Report. Vol. 23. 

 Aniial.s. Yol. 1, N. 1-3. 



Spningfield, Mass. 



Museum of Nafnral Historn. 

 Report. 1912-13. 



Warren, Pa. 



Academii of Sciences. 



Transactious. Yol. 1, Part. 3. 4. 



Washington. 



Smithsonian Institution. 

 List of Pidlications. 1912. 

 Burcatt of Ameriran EUinolofjfi. 

 BuJletiii. N. 47. 54. 56. 

 Aunual Report. 28. 1906-07. 

 United States National 3h(.scum. 



Bnlletin. N. 50. 71. 79. 81. 83-87. 



Coutribntions from the Uuited States National Herbarimu. Yol. 13. Yol. 

 14. Yol. 16, Part 2-8. 10. 12. 13. Yol. 17, Part 2. 3. 5. Yol. 18, 

 Part 1.2. 

 Proceedings. Yol. 41-46. 

 Anunal Report. 1911. 12. 13. 

 United States Department of Agriculture . 

 Yearhook. l'tll. 12. 13. 

 Burean of Jliological Survcy. 

 Bnlletin. 42. 43. 44. 



