January 29, 1915] 



SCIENCE 



171 



Y.; H. G. MaeMillan, Univ. of "Wisconsin, Madi- 

 son, Wis. J J. N. Martin, 507 Welch Av., Ames, 

 Iowa; Edgar Nelson, Gainesville, Fla. ; J. B. S. 

 Norton, Maryland Agrie. Exp. Station, College 

 Park, Md.; P. J. O'Gara, Medford, Oregon; A. 

 Vincent Osmnn, Mass. Agrie. College, Amherst, 

 Mass.; Frederick S. Page, University of Vermont, 

 Burlington, Vt. ; A. K. Peitersen, University of 

 Vermont, Burlington, Vt. ; Permen L. Pickett, 

 Bloomington, Indiana; J. M. Eeade, University of 

 Georgia, Athens, Georgia; J. W. Roberts, Uept. of 

 Agrie, Washington, D. 0. ; Winifred J. Eobinson, 

 Vassar College, Poughkeepsie, N. Y. ; John Henry 

 SchafEner, Ohio State University, Columbus, Ohio; 

 Annie Morrill Smith (Mrs.), 78 Orange St., 

 Brooklyn, New York; Neil Everett Stevens, 

 Bureau of Plant Industry, Washington, D. C. ; 

 Wilmer G. Stover, Ohio State University, Colum- 

 bus, O.; G. P. Van Eseltine, U. S. National Her- 

 barium, Washington, D. 0. ; Arno Viehoever, De- 

 partment of Agriculture, Washington, D. C. ; J. E. 

 Weir, Bureau of Plant Industry, Washington, 

 D. C; John Minton Westgate, Department of 

 Agriculture, Washington, D. C; E. B. Whitney, 

 Institute of Industrial Eesearch, Washington, 

 D. C. ; Yungyen Young, University of Illinois, 

 Urbana, 111.; John A. Stevenson, Estacion Insu- 

 lar, Eio Piedras, Porto Eieo. 



The following members were elected Fellows: 

 Frank M. Andrews, LeEoy Abrams, Carletou E. 

 Ball, Joseph S. Caldwell, G. N. Collins, Arthur J. 

 Eames, Theodore C. Frye, Leonard L. Harter, 

 Charles F. Hottes, Lewis Knudson, Wanda M. 

 Pfeiffer, S. B. Parish, Frederick J. Pritchard, J. 

 B. Eorer, Charles A. ShuU, Edmund W. Sinnott, 

 Laetitia M. Snow, William C. Stevens, U. E. 

 Safford, Walter P. Thompson, Eeinhardt Thiessen, 

 James M. Van Hook. 



On the afternoon of December 30 a symposium 

 on ' ' The Genetic Eelationship of Organisms ' ' was 

 held. The subject was considered under the fol- 

 lowing heads : 



1. "Morphology as a Factor in Determining 

 Genetic Eelationships. " Dr. J. M. Greenman, Mis- 

 souri Botanical Garden. 



Discussion led by Dr. A. S. Hitchcock, Depart- 

 ment of Agriculture. 



2. ' ' The Genetic Eelationship of Parasites. ' ' 

 Dr. F. D. Kern, Pennsylvania State College. 



Discussion led by Dr. C. L. Shear, U. S. De- 

 partment of Agriculture. 



3. ' ' The Experimental Study of Genetic Eela- 

 tionship." Dr. H. H. Bartlett, U. S. Depart- 

 ment of Agriculture. 



Discussion led hj Dr. B. M. Davis, University 

 of Pennsylvania. 



The address of retiring President D. H. Camp- 

 bell, on "Present Tendencies in Botanical Work 

 in America," was delivered at the dinner for all 

 botanists on the evening of December 30. 

 An Endophytic Endodermal Fungus in Solanum 



tuberosum: E. Mead Wilcox, Geo. K. K. Link 



AND FLOKENCE A. MCCOBMICK. 



A preliminary account of an endophytic fungus 

 in Solanum tuberosum. This fungus is found 

 throughout the whole plant but is confined to the 

 endodermis, and, in the usual vegetative propaga- 

 tion of the potato proceeds from the tuber through 

 the shoots to the daughter tubers. A discussion 

 of its possible relation to tuberization is included. 

 JReport on Cultures with Foliaceous Species of 

 Peridermium on Pine Made in 1914: George G. 

 Hedgcock and Wm. H. Long. 

 This paper gives a summary of an extensive 

 series of experiments with six of the foliicoloua 

 species of Peridermium on pines of the United 

 States, viz., Peridermium acicolum Underw. & 

 Earle, P. carneum (Bose.) Seym. & Earle, P. deli- 

 catulum Arth. & Kern, P. inconspicuum Long, P. 

 intermedium Arth. & Kern, and P. montanum 

 Arth. & Kern. A total of 712 inoculations were 

 made with these species and the species of Coleo- 

 sporvum, of which these Peridermia are alternate 

 forms. The results of the experiments are revolu- 

 tionary, since they indicate that at least four of 

 these species of Peridermium, and the related spe- 

 cies of Coleosporium belong to one polymorphic 

 species, and that the transfer from one herbaceous 

 host to another is accomplished through the aecial 

 forms in the pines. 



Origin and Development of the Lamellae in Co- 

 prinus comatus, atramentarius and rmcaceus: 

 Geoege P. Atkinson. 



The origin and development of the lamellae is 

 described and compared with the two types al- 

 ready known in Agaricus and Amanitopsis. 

 The Specific Identity of Phallus impudicus and 

 Dietyophora duplioata: Geo. F. Atkinson. 

 The only differential character between these 

 two species is the possession of an rndusium by 

 the latter. The indusium varies in strength of 

 development. Sometimes it is strongly developed, 

 sometimes very weakly so, sometimes wanting or 

 only a fundament of it in. the embryonic stage. 

 The Relationship of Endothia parasitica and Be- 

 lated Species to the Tannin Content of the Host 

 Plants: Mel. T. Cook and Gut West Wilson. 



