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The Analytical Separation of Iron and Aluminium by Henry Erdmann Radasch, 1897

The Analytical Separation of Iron and Aluminium by Henry Erdmann Radasch, 1897, Page 25

Class IV. 

1. Basic nitrate method. (13)

The hydrate precipitate of both iron and aluminium is dissolved in a little dilute nitric acid [and?] [to?] this solution about 5 [?] of a 20% solution of potassium hydrate are added. This is evaporated to dryness upon a [?] and heated until no more fumes of nitric acid are given off. The residue is [?] with a little water, about 2 [?], and [?] evaporated. The residue of basic nitrates is dissolved in water + warmed gently and to the solution 15 - 20 drops of a saturated solution of sodium sulphate is added. The precipitate is allowed to settle and then filtered over [?], or, by means of a double filter paper, without the aid of the [filter?] [?]. The precipitate of  basic ferric nitrate is washed with [?] dilute potassium nitrate solution and then dissolved in hydrochloric acid (dilute) and reprecipitated with ammonia.
To the filtrate a little hydrochloric acid is added and the aluminium determined in the usual way. 
The solution of the basic nitrates [should?]

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Class IV. 1. Basic nitrate method. (13) The hydrate precipitate of both iron and aluminium is dissolved in a little dilute nitric acid [and?] [to?] this solution about 5 [?] of a 20% solution of potassium hydrate are added. This is evaporated to dryness upon a [?] and heated until no more fumes of nitric acid are given off. The residue is [?] with a little water, about 2 [?], and [?] evaporated. The residue of basic nitrates is dissolved in water + warmed gently and to the solution 15 - 20 drops of a saturated solution of sodium sulphate is added. The precipitate is allowed to settle and then filtered over [?], or, by means of a double filter paper, without the aid of the [filter?] [?]. The precipitate of basic ferric nitrate is washed with [?] dilute potassium nitrate solution and then dissolved in hydrochloric acid (dilute) and reprecipitated with ammonia. To the filtrate a little hydrochloric acid is added and the aluminium determined in the usual way. The solution of the basic nitrates [should?]