PROCEEDINGS: BOTANICAL SOCIETY 561 



nical Instruction of Ireland; and Dr. H. M. Quanjer, Plant Patholo- 

 gist of the Institute for Phytopathology at Wageningen, Holland. 



In response to an informal welcome by the President of the Society, 

 Dr. Karl F. KellErman, Dr. Cotton told the Society of the condition 

 of botanical work in England and the effect of the war on the universi- 

 ties and the research laboratories. While serious losses to the personnel 

 have come through the war, economic work has been stimulated. A 

 research institute and an institute of applied botany have been es- 

 tablished at Rothamsted. The British Mycological Society is more and 

 more recognizing plant pathology. IS 



Dr. Pethybridge explained that the war had stimulated a great 

 development of food production in Ireland and that it had brought 

 a recognition of the value of economic biological work. There is a 

 small but active group of men in Ireland interested in natural history. 



Dr. Quanjer called attention to the fact that Holland is a small 

 country, being only about one-one hundred and sixtieth of the United 

 States, yet it has produced in the past and present a goodly number 

 of botanists and has several well-developed university departments of 

 botany. After referring briefly to the botanical work of Lotsy, Oude- 

 mann, De Vries, Beyerinck, Treub, Ritzema Bos, Wakker, Van Hall, 

 and others, he discussed the difficult group of plant diseases which in- 

 cludes mosaic of tobacco, leaf-roll and mosaic of potato, the Sereh 

 disease of sugar cane, a dwarfing of a Japanese mulberry, and an in- 

 fectious mosaic of the ornamental Abutilon. These diseases, he said, 

 are probably due to ultra-microscopic organisms. 



Chas. E. Chambliss, Recording Secretary. 



