136 



Dr. Fred J. Seaver spoke on "Mycology of the Bermuda 

 Islands" outlining his recent trip and calling attention to a few of 

 the interesting fungi collected. A full account of this expedition 

 appears elsewhere in the Journal, under report on ■"Mycological 

 Work in Bermuda." 



Mr. K. J. Schreincr reported on "Studies of fiber length in 

 poplars." This was a report on the variation of fiber length in 

 the wood (secondary xylem) of several species of poplar, with 

 special reference to the variation in fiber length in a single growth 

 ring. Fiber measurements on P. trcmiiloidcs and P. F.iujcuei, indi- 

 cate clearly that the average fiber length varies from the spring 

 wood (inner part) to the summer wood (outer part) in any an- 

 nual ring. The average length increases somewhat irregularly 

 from the first formed wood to the summer wood, and then falls 

 very rapidly. The average length in the inner one-third of any 

 ring was always found to be shorter than the average length of 

 the outer one-third of the same ring. Mention was also made of 

 variation in average fiber length in different parts of the tree 

 trunk. 



A. B. Stout, 

 Secretary of the Conference. 



PUBLIC LECTURES DURING JULY AND AUGUST 



The following is the program of the lectures for July and Au- 

 gust. They are given in the Museum I'uilding of The New York 

 Botanical Garden on Saturda\' afternoons, beginning at 4 o'clock. 

 Doors are opened at 4:15 to admit late-comers. 



July 3. "The ."^urviNal ;inil Protection of Harried l-'lowers." 



kaxniond I 1. ToiTey. 

 July 10. "Immunization against Diseases caused li\ Micro- 

 scopic Plants." Dr. 11. 11. Rushy. 

 'Lilies." Dr. A. P.. Stout. 

 'The (.)i! ()live: Tree and h'ruit." 



Miss Ada Sterling. 

 'Oui" I'orests ami lluir Uses." 



I )r. Israel \\ iin>lein. 



