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cially mature with me, that therefore they always take a year to 

 ripen ; it is quite possible that in a state of nature and under 

 different conditions, they may mature rapidly. At any rate, two 

 sorts of bodies were seen together last year, transparent, smooth 

 bodies and rough, brown ones. I considered them to be different 

 states of the same resting spores, and subsequent facts have proved 

 my supposition to be correct. * * * The Rev. J. E. Vice, 

 Forden Yicarage, Welshpool, a gentleman who has made a special 

 study of microscopic fungi, has had some of my living material 

 under examination during the past winter and spring, and when 





riG. 5. Magnified Section or Leaf. A A, IIairp. B, Cell Tissue; C, Spore Bearino 

 fcTEM FROM Mycelium. G, Conidial Spokes Escaping. J H, Eesting Spokes Con* 



JUGATING. 



the first signs of germination showed themselves in my oospores, 

 I wrote him to keep a good lookout for results. He wrote me as 

 follows under date of April 21st: "My idea certainly is that the 

 oospores are germinating ; bottle No. 1 had a thin film on it which 

 developed into a lot of mycelium and threads of Peronospora." 

 I, too, observed the same fact in London. 



