Illustration showing- the rtegree of settlini; in i)roperl.T and im- 

 properly made Bordeaux mixture- 1. Bordeaux mixture 

 properly made by mixing diluted lime and copper sulfate 

 together in a separate vessel twenty -four hours after the cop- 

 per and lime have been prepared. 2. Mixture made by com- 

 bining freshly made copper sulfate and lime solutions. 

 3. Dissolved copi)er solution poured into lime water while 

 warm. 4. Freshly prepared lime water poured into the cop- 

 per solution while warm. Nos. 1 and 2 photographed three- 

 and one-half hours after mixture was i)laced in cylinders 

 and shaken ; Nos. 3 and 4 photographed lifteen minutes after 

 being placed in cylinders and shaken. 



