146 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



3. Salmon. E. S. : On tbe Stages of Development reached by certain Biologic 

 Forms of Erysiphe in cases of non-infection (The New Phytologist, iv. 217-222, 

 1905. 



4. Ic'u m : A Monograph of the Erysijphacece ( Mem. Torrey Club. ix. 1900). 



5. Idem : Supplementary Notes on the Erysiphacece (Bull. Torrey Bot. Club, 

 xxix. 91, 1902). 



6. Siaeback. K. : Om Parasitsvampar (Somniarkurserna i Uppsala 1895. p. 13, 

 1895). 



