52 



Mycologia 



the speaker gave an immensely interesting account of the plant 

 diseases in England. Silver-leaf was very bad on apples, plums, 

 etc., while Nectria canker and brown-rot were among their worst 

 orchard diseases. Potato-wart was terrible, often taking 100 per 

 cent, of the crop. Dr. Brierly said this was the only case he 

 knew in which the host was either entirely susceptible or entirely 

 immune. The mycological flora of the soil was also touched 

 upon as an exceedingly important field of investigation. 



The accompanying photograph, showing a number of those in 

 attendance, was taken at Arendtsville, Pennsylvania, after a 35- 

 mile drive over the mountains through the Mt. Alto State Forest 

 of 25,000 acres. 



The visit to Gettysburg was greatly enjoyed, and another ex- 

 cellent photograph was taken which I should like to reproduce if 

 space allowed. The effects of shot and shell on forest trees were 

 much in evidence on the battlefield, where one white oak was 

 noticed with 18 bullet-marks in the lower part of its trunk. In a 

 low spot in the forest, near a spring, the white ash trees were all 

 seriously affected with a heart-rot caused by Fomes fraxinophi- 

 lus, many sporophores of this fungus being observed on the 

 trunks. 



The meeting Friday evening, at Gettysburg, was devoted to im- 

 pressions, results, plans for the future, and a general summing-up 

 of the phytopathological situation. Prof. C. R. Orton presided 

 and called upon Jones, Waite, Ball, Whetzel, Brierly, Lyman, and 

 others to make impromptu addresses on various subjects. It was 

 the general opinion that the meeting had been a most decided 

 success. 



On Saturday morning, a number of the pathologists, including 

 Brierly, Foex, Rosatti, Stevenson, Bain, Whetzel, Kern, Adams, 

 Orton, Torrey, and others, journeyed by automobile from Gettys- 

 burg to Lancaster and thence by trolley to Ephrata, where Mr. 

 Olsen showed the co-operative experiments on tobacco being 

 conducted by the U. S. Department of Agriculture and the Penn- 

 sylvania Agricultural Experiment Station. At the farm of Pro- 

 fessor E. K. Hibshman, the visitors saw numerous strains of 

 tobacco growing under the ideal conditions of this region. The 



