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Conductivity curves of cultures (series 15) in distilled 

 water subsequent to treatment, as follows: No. 19, 4 per cent ethyl 

 alcohol in water, 30 minutes; No. 20, 4 per cent methyl alcohol in 

 water, 30 minutes; No. 21, 4 per cent chloral hydrate in water, 30 

 minutes; No. 22, 4 per cent benzol in water, 30 minutes; No. 23, 

 4 per cent ethyl acetate in water, 30 minutes; No. 24, 4 per cent 

 toluene in w r ater, 30 minutes; No. 25, 4 per cent benzaldehyde in 

 water, 30 minutes; No. 26, control — placed directly into distilled 

 water; No. 27, control — placed directly into distilled water. The 

 plants were 38 days old at the time of treatment. The first reading 

 was taken in all cases after the roots had been in distilled water 

 exactly 30 minutes. In the case of the treated plants the roots were 

 in distilled water containing the anesthetic for the specified time, 

 after which they were transferred to the distilled water, the con- 

 ductivity of which was subsequently determined. 



