Xil] PINE-BLISTER. 267 



and found his results correct Hartig, for instance, to 

 whose indefatigable and ingenious researches w e owe 

 most that is known of the disease caused by the 

 Pertdermium^ has confirmed Wolff's results ; and in 



Fig 41 —A spore of Pcridermumi Pini germinating It puts forth the Iong» 

 hranthecl eermmal h^phae on the damp surface of a leaf oi Sk.necw^ and one of 

 the branches enters a stoma, and forms a mycelium m the leaf . after some time, 

 the mycelium gives rise to the uredospores and teleutospores of Coleosp07imn 

 Seneuoms (After Tulasne highly magnified ) 



this country Mr. Plowright has successfully repeated 

 the culture. 



It was to the brilliant researches of the late Prof. 

 De Bary that we owe the first recognition of this 



