8 MISSOURI BOTANICAL GARDEN BULLETIN 



Scientific and Popular Lectures. — Among the scientific and 

 popular lectures given by members of the scientific and (Jar- 

 den staffs the more important are the following: 



W. II. Chambers, April 14, before the Division of Biological 

 Chemistry of the American Chemical Society, "The* Rela- 

 tion of Dextrose to II-ion Concentration with Bacillus Coli." 



B. M. Duggar, April 14, before the Division of Biological 

 Chemistry of the American Chemical Society, "The Effect of 

 Conditions on the Relation of Seed Plants to II-ion Concentra- 

 tion of Nutrient Solutions." 



B. M. Duggar, October 15, before Town and Gown, 'The 

 Japanese Problem in California." 



B. M. Duggar, November 3, before the St. Louis Association 

 of Gardeners, "Mushrooms. Native and Cultivated" 



B. M. Duggar, November 30, before the Graduate Club, 

 Washington University, "The Work of the National Re- 

 search Council and Its Influence on Research in the Uni- 

 versity. ' ' 



B. M. Duggar, December 15, before the St. Louis Natural 

 History Museum Association, "Native Mushrooms and Their 

 Habitats." 



B. M. Duggar, December 16, before the Garden Club of St. 

 Louis, "The History of a Mushroom Bed and Mushroom Pro- 

 duction." 



Adele Lewis Grant, March 23, before the Asclepios, the Bio- 

 logical Society of Washington University, "The Economic 

 Value of Some of Our Summer Birds." 



L. P. Jensen, January 20, before the Garden Club of St. 

 Louis, "The Use of Native Plants in Gardens." 



L. P. Jensen, January 1(>, before the Chapter House, Ed- 

 wardsville, Illinois, "Landscape Gardening." 



D. Miller and Adam Huber, March 3, before the St. Louis 

 Association of Gardeners, "Orchids." 



G. T. Moore, October 19, before the Patrons-Teachers' As- 

 sociation of Sherman School, "The Missouri Botanical Gar- 

 den as a Neighborhood Institution." 



G. T. Moore, December 17, before Town and Gown, "Some 

 Old Herbals and the Doctrine of Signatures." 



G. H. Pring, February IS, before the St. Louis Natural His- 

 tory Museum Association, "Curiosities of Plant Life." 



G. H. Pring, April 20, before the Webster Groves High 

 School, "Spring Planting." 



H. von Schrenk, September 1, before the Association of En- 

 gineering Societies at San Francisco, "Wood Preservation." 



