48 PROTECTION OF PLANTS — 1924-25 



the infection was so nearly identical that the first stages of Phyllosticta and C 

 Jindemutkiatium could not be told apart. 



In addition to the cultures isolated here, Dr. B. T. Dickson supplied Bar- 

 rus' alpha arid beta strains and an isolation made from Quebec material. These 

 were not in a sporulating condition and as it was found impossible to rejuve- 

 nate them, they were not used in any of the infection experiments. 



Dr. J. G. Leach kindly supplied six of his cultures, one of which did not 

 sporulate consistrnth^ and was not used for that reason in the infection expe- 

 riments. The following in a list, with all the available information, of the cul- 

 tures and their sources. 



Cultures and their Sources. 



Culture. 



Alpha: Obtained from Dr. Dickson, who had received it from Dr. M. F. Bar- 



rus of Cornell University. It had been in culture for some time. 

 Beta: Obtained from Dr. Dickson, who had received it from Dr. M. F. Barrus 



of Cornell Univ^ersity. It has been in culture for some time. 

 Quebec Strain: Obtained from Dr. Dickson, who had isolated it from Quebec 



material. It had been in culture for some time. 

 Leach's Forms I, II, III, IV, and VIII were all supplied by him from cultures 



used in his work (G). 

 L Isolated by H. R. Angell, Oct. 1st. from a bean from a private garden in 



Ste. Anne de Bellevue. 

 2. Isolated from a black kidney ))ean from the Horticultural Department's 



plots. 



4. Isolated from a wax podded l^ean that was not seriouslv infected, Horticul- 



tural Department. 



5. Isolated from a green podded type that was not seriously infected. Horticul- 



tural Department. 



6. Isolated from a yellow wax-podded bean. Horticultural Department. 



16. Isolated from a pod of Perry's Special, School plots on the College farm. 

 23. Isolated from bean seeds that Dr. Dickson had secured from the Horticul- 

 tural Department. (Very heavily infected.) 



25. Isolated from a wax podded bean showing very large lesions. Horticultural 



Department. 



26. Isolated from a bean pod sent in from Maugerville, N. B. Unknown var- 



iety. 



29. Isolated from a bean pod sent by Dr. M. F. Barrus, Cornell University. 



An unknown variety and very seriously infected. 



30. Isolated from a bean pod sent by Dr. R. E. Stone, Guelph, Ont. Bean No. 



7251. 



31. Isolated from a l^ean sent by Dr. R. E. Stone, Guelph, Ont. Bean .5022. 



