OX HYDRANGEA ARBORESCEXS. 
19 
(d.) The addition of hydrosulphuric acid to c, followed by 
heating, caused no precipitate. 
(e.) To c. was added solution of ammonia until an alkaline re- 
action was induced, when the addition of hydrosulphate of am- 
monia caused a white precipitate. 
(/.) The addition of phosphate of soda and solution of am- 
monia, caused a white precipitate in d, probably of lime. 
(g.} To c. was added some carbonate and solution of ammonia, 
the latter in excess ; on boiling the mixture, a copious white pre- 
cipitate was occasioned : this was washed, separated by filtration 
and dissolved in weak muriatic acid, in which the addition of so- 
lution of ammonia and oxalic acid caused a precipitate of oxalate 
of lime. 
(/*.) The liquid c. gave a yellow precipitate on the addition of 
an alcoholic solution of bichloride of platinum, indicative of pot- 
assa in small amount. 
The liquid c. was neutralized with bicarbonate of potassa 
and solution of antimoniate of potassa added, a precipitate was 
occasioned indicating the presence of soda. 
(j.) Nitrate of silver added to an aqueous solution of I. pro- 
duced a yellow precipitate, soluble in nitric acid; chloride of ba- 
rium and subacetate of lead, occasioned white precipitates; that 
by the first being soluble nitric and muriatic acids, and that by 
the lead salt, soluble in nitric acid. 
(&.) The residue of the ashes undissolved by water was tested 
with water acidulated with muriatic acid ; the addition of the 
acid occasioned brisk effervescence. The solution on evaporation 
yielded 42J grains of a slightly yellowish matter. 
(7.) A portion of this was dissolved in water acidulatad with 
muriatic acid. 
(??&.) To a portion of solution of hydrosulphuric acid was 
added and heated; no change resulted. 
(n.) The liquid I., gave a white precipitate with sulphuric acid, 
soluble in a large excess of water ; in another portion to which 
ammonia had been added, oxalic acid occasioned a precipitate, 
soluble in nitric and muriatic acids, insoluble in oxalic and acetic 
acids, indicating lime. 
(0.) To the liquid I. was added sufficient solution of ammonia 
to render it neutral, causing also a gelatinous precipitate, the 
