MASS. EXPERIMENT STATION BULLETIN 303 



Table L Thk Effect on Cucumbers Plants of HCN Gas Following 



Treatments with Lime Bordeaux Mixtures, and Determinations 



OF Soluble Copper in the Residue 



•Two samples prepared uiih chemical hydratcd lime gave a negative reaction for soluble copper; 

 two samples prepared with milK of lime from fresh calcium o.\ide gave a positive reation. 

 'There was no injury in twelve tests; in one test there was slight injury 

 'No soluble copper in one test; slight trace in two. 

 *No injury in two cases; injur> in two cases 

 'Soluble copper in one test; none present in three. 



