REFERENCES 



Under this heading it is proposed to include, by author, title, and citation, references to all 

 scientific papers published in or emanating from Washington. It is requested that authors cooperate 

 with the editors by submitting titles promptly, following the style ussd below. These references are 

 not intended to replace the more extended abstracts published elsewhere in this Journ.vl. 



PALEONTOLOGY 



KxowLTox. F. H. Results of a paleobotanical study of the coalbearijig rocks of the 



Raton Mesa region of Colorado and New Mexico. American Journal of Science, 



IV. 36: 526-530. May, 1913. 

 KxowLTON, F. H. The fossil forests of Arizona. American Forestry 19: 207- 



218. April, 1912. 

 White, D. The fossil flora of West Virginia. West Virginia Geological Survey 



5 (A) : 390-453, 488-491. 1913. 

 White, D. A new fossil plant from the state of Bahia, Brazil, .\merican Journal 



of Science, IV. 35: 633-636, f. 1-3. June 1913. (Descvihes Alethopteris Bran- 



neri, sp. nov. — W.R.M.). 



EVOLUTION 



CoLLixs, G. N. and Kemptox, J. H. Inheritance of waxy endosperm in hybrids of 

 Chinese maize. IV^ Conference Internationale Genetique, Pari,s, 1911: 347- 

 357. 1913. 



CoLLixs, G. N. and Kemptox, J. H. Inheritance of ica.xy endosperm in hybrids 

 with sweet corn. Bureau of Plant Industry Circular 120 : 21-27, f . 1. April 5, 

 1913. 



CoLLixs, G. N. Mosaic coherence of characters in seeds of maize. Bureau of Plant 

 Industry Circular 132: 19-21. June 19, 1913. 



CoLLixs, G. N. Mendelian factors. Science 38: 88, 89. July 18, 1913. 



Swingle, W. T. Variation in first generation hijbrids {imperfect dominance); its 

 possible explanation through zygotaxis. IV^ Conference Internationale Gene- 

 tique, Paris, 1911: 581-594, f. 1-10. 1913. 



BOTANY 



Bartlett, H. H. Systematic studies on Oenothera, — //. The delimitation of 

 Oenothera biennis L. Rhodora 15: 48-53, pi. 102, 103. April 12, 1913. 



Brittox, N. L. and Rose, J. N. Studies in Cactaceae. — /. Contributions from 

 the U. S. National Herbarium 16: 239-242, pi. 66^73. April 10, 1913. (In- 

 cludes descriptions of 7 new species in Echinocactus, Epiphyllum, Hylocereus, 

 Nyctocereus, Opuntia, and Wittia.— W. R. M.) 



Collins, G. N. A variety of maize with silks maturing before the tassels. Bureau 

 of Plant Industry Circular 107: 3-11, f. 1-3. February 7, 1913. 



Cook, O. F. The abortion of fruiting branches in cotton. Bureau of Plant Industry 

 Circular 118: 11-16. -March 22. 1913. 



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