J. V. Eyre and E. S. Salmon 493 



Ith day. As above. 



IQlh day. A very few small tufts of conidiophores on a few patches on both leaves. 



I'ilhday. A few, small, almost powdery patches on both leaves. 



Exper. 4. Solulion conlaining ()-<>6 % S.S. and 1 % soft soap. 



1st day. JNIildew much checked ; mycelium more or less collapsed and flocculeiit ; 

 very few, weak, isolated conidiophores visible. 



ith day. The mildew greatly checked, but not apparently dead. 



1th day. On two leaves all the patches showed the mycehum collapsed and 

 sterile or bearing only weak, short conidiophores; on the other two leaves some 

 patches were as above described, while others showed little tufts of vigorous, longer 

 conidiophores. 



10;/( day. On one plant the two fairly old leaves bore nearly all sterile ijatches, 

 a few only showing freshly-produced, erect conidiophores; on one plant the two 

 leaves each bore the majority of pati-hes with very numerous erect, almost or cjuite 

 powdery conidiophores. 



Exjier. 5. Solution containing 0-08 % S.S. and 1 % soft soap. 



Ist day. Mildew much checked ; mycelium more or less collapsed and flocculent ; 

 very few, weak, isolated conidiophores visible. 



^th day. The patches white, but quite sterile. 



1th day. The mycelium everywhere floccoso-coUapsed, usually sterile but 

 occasionally with minute conidiophores. 



\Oih day. All the patches quite sterile or occasionally with very short and weak 

 conidiophores. 



IZth day. As above. 



18th day. All the patches, thougli still white, quite sterile. 



Exper. 6. Solution, containing 0-()8 % S.S. and 1 % soft soap. 

 1st day. The mildew greatly cheeked, the mycelium all collapsed and flocculeiit. 

 'ird day. A very few conidiophores present on a few patches. 

 9th day. The patches mostly completely sterile; a few scattered conidiophores 

 present on a few patches. 

 llth day. As above. 



Exper. 7. Solution containing O08 % S.S. and 1 % soft soap. 



1st day. The mycehum everywhere collapsed. 



3rd day. All the patches quite sterile. 



1th day. The patches all sterile, and dormant or tlying. 



!(!//( day. As above. 



Exper. 8. Solution containing 0-11 % S.S. and 1 % soft soap. 



1st day. Mildew greatly checked, with mycehum collapsed. 



3rd day. Some short conidiophores present on some patches. 



llh dai/. Mycehum of all the patches collapsed, sterile and apparently dying. 



Wlhday. The mycelium of many of the patches almost disappeared. 



loth day. A few scattered conidiophores visible on a few patches. 



