AMERICAN ASSOCIATION ADVANCEMENT OF SCIENCE. 1 9 



Island ; Dr. A. S. Hitchcock, of the U. S. Department of Agricul- 

 ture ; Professor W. F. Ganong, of Smith College ; Professor E. N. 

 Transeau, of Alma College, Michigan; Professor Herbert M. 

 Richards and Dr. Tracey E. Hazen, of Barnard College, Colum- 

 bia University ; Professor Bruce Fink, of Miami University, Ox- 

 ford, Ohio ; Dr. John W. Harshberger, of the University of Penn- 

 sylvania ; Dr. N. L. Britton, Director of the New York Botanical 

 Garden; Dr. William A. Murrill, Dr. C. Stuart Gager, Mr. 

 George V. Nash, and Dr. John H. Barnhart, of the New York 

 Botanical Garden ; Professor Lucien M. Underwood, and Dr. 

 Carlton C. Curtis, of Columbia University. 



Section G — Botany, held three independent sessions for the 

 reading of papers. The members of this section also attended the 

 meetings of the Botanical Society of America, as well as a joint 

 session with Section F, Zoology. The meetings of Section G were 

 presided over by the Vice-President and Chairman, Dr. Daniel 

 T. MacDougal. There was a registered attendance of 139. 



The papers read represented some of the best work now being 

 done in botany and included the following : 



G. H. Sluill, " Elementary Species and Hybrids of Bitisa." 

 E. S. Brainerd, " Hybridization in Violets." 



D. T. MacDougal, " Origination of Species of Hybrids among Wild 

 Plants." 



J. B. Norton, " Mendel's Law as a Tracer of Lost Parents, L : The 

 American Carnation." 



E. N. Transeau, " Hybridization as a Factor in Migration and Compe- 

 tition." 



F. E. Lloyd, "The Flowering Period of a Hybrid Opuntia." (By title.) 

 F. E. Clements, " The Natural System of the Discomycetes." 



F. L. Stewart, " The Sub-serial Absorption : A Function of the Ligrde 

 and Stipulaceous Tissue of Grasses. An Outbreak of the European Cur- 

 rant Rust." 



W. D. Hoyt, "The Periodicity of the Sexual Cells of Dictyota diclio- 

 tonia." 



B. E. Livingston, " A Recording Evaporimeter." 



E. W. Olive, " Evidences of Sexuality in the Slime Moulds." 



Robert Boyd Thomson, "The Araucaricae — a Proto-siphonogamic 

 Method of Fertilization." 



W. W. Rowlee, " Localization of Plants in the Finger-lake Region and 

 the Adjacent Ontario Lowlands of Central New York. 



S. M. Tracy, " ' G ' Trees." 



E. A. Bessey, " Spore Forms of Spcga::::iiiia oniata. Accelerated Blos- 

 soming Due to Defoliation by Storm." 



