PROCEEDINGS OF THE ACADEMY AND AFFILIATED 



SOCIETIES 



ANTHROPOLOGICAL SOCIETY OF WASHINGTON 



The 461st Regular and 33d Annual Meeting of the Society was held 

 April 30, in the New National Museum, with the president, Mr. F. W. 

 Hodge, in the chair. The following officers were elected: President, 

 G. R. Stetson; vice-president, Francis LaFlesche ; secretary, William 

 H. Babcock; treasurer, J. N. B. Hewitt; additional members of the 

 board of managers, G. C. Maynard, Felix Neumann, E. T. Williams, 

 E. L. Morgan, and John R. Swanton. 



Several amendments to the by-laws were adopted. 



Truman Michelson, Retiring Secretary. 



THE BOTANICAL SOCIETY OF WASHINGTON 



The 81st meeting was held May 7, 1912. The following papers were 

 read: 



Further studies on the pecan "rust": F. V. Rand. A preliminary 

 report on the fungus causing this pecan leaf disease was published in 

 Phytopathology, August, 1911, under the name Mycosphaerella coniyexula. 

 Since that time the fungus in question has been obtained from a number 

 of other sources and several strains known to have orignated from single 

 two-celled ascospores have been under study. In the course of one and 

 one-half year's growth in culture, strains originally producing a major- 

 ity of apparently two-celled ascospores have gradually changed until 

 now most of the ascospores are distinctly non-septate. Furthermore 

 a typical Gloeosporium form was developed in culture and also obtained 

 from the host. A large number of colonies known to have originated 

 from single ascospores or single conidia all gave cultures producing 

 both perithecial and conidial forms, showing the two to be different 

 phases in the life cycle of the same fungus. Inoculations on Jonathan 

 and Yellow Newton apples gave a decay similar to bitter-rot, with pro- 

 duction of conidia and immature perithecia on -the latter. Inoculations 

 on young pecan leaves under greenhouse conditions gave negative results 

 but infections together with production of conidia and mature peri- 

 thecia readily occurred on living leaves in damp chamber. The latter 

 case approximates conditions in the field, since the disease has been 

 found largely on mature leaves late in the season and under damp con- 

 ditions near the ground. From the studies summarized above it would 

 appear that the fungus is closely related to if not identical with Glom- 

 erella rufo?naculans, and that it is not a very active parasite on the pecan. 



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