i88 3 .J 
335 
Action of Poisons on Flowers . 
be but little more faded than those which were kept in 
water only, and if diluted down to one to ten the flowers 
would remain about the same time as those in water. 
Action of Boric and Salicylic Acids. 
Solutions ranging from i to J per cent of crystalline acids 
were used. Salicylic acid always discoloured the stems, 
whilst boric acid did not. All the flowers in salicylic acid 
were much more withered after twenty-four hours than 
those in water alone. All the flowers in boric acid were 
withered more than those in water, but not so much as those 
in salicylic acid. 
Acids and Alkalies. 
The following solutions were used, viz., normal carbonate 
of soda, normal potash, and normal sulphuric acid. All 
the flowers were withered after some time, one as much as 
another. The stems of those in acid were discoloured ; 
those in alkalies were not. 
Action of Mineral Salts. 
Salts which caused the Stems to turn 
Brown. 
Copper sulphate. 
Mercuric chloride. 
Potassium sulphocyanide. 
Ferric chloride. 
Ferrous sulphate. 
Salts which had no effedt on the 
Stems. 
Lead acetate. 
Sodic arseniate. 
Potassium chromate. 
,, bichromate. 
,, ferrocyanide. 
,, ferricyanide. 
Sodium sulphite. 
Zinc sulphate. 
Barium chloride. 
Strontium nitrate. 
Permanganate of potash. 
Oxalate of ammonia. 
Salts which coloured the 
Flowers. 
Potassium chromate. 
,, bichromate. 
,, ferrocyanide. 
,, ferricyanide. 
Ferrous sulphate. 
Ferric chloride. 
Copper sulphate. 
Potash alum. 
Salts which did not colour the 
Flowers. 
Potassium permanganate. 
And all those salts which 
form a colourless solution 
with water, with the excep- 
tion of potash alum and other 
salts of alumina. 
