[C23]

(250

Salts

Aluminium & Potassium sulphate of (common alum) half-minim drops were placed on the discs of nine leaves & produced no effect.

Gold chloride of: seven leaves were immersed together, so that each had 30 minimof a sol. of 1 gr. to 1 oz, & there was some inflection after 8 m; after 45 m immense inflection; after 3h the fluid coloured purple & glands blackened. After 6h the leaves were placed in pure water, & next morning were found discoloured & evidently killed. The secretion from the glands decomposes the chloride very readily; & the glands become very delicately coated with metallic gold, & particles float on the surface of the fluid.

Lead chloride of: three leaves were immersed in 90 minim of a sol. of 1 gr. to 1 oz: after 23h not a trace of inflection & glands not blackened. They were then [several words illeg] to 20 oz) of phosphate of