Six months later, the indefatigable astronomer started for Danzig to set at rest a dispute of long standing between Hooke and Hevelius as to the respective merits of plain or telescopic sights; and towards the end of 1680 he proceeded on a continental tour.
The epistle is more the work of a companion of St Paul of long standing than of one who, with quite different and independent antecedents, had only been influenced by the perusal of one or two of St Paul's letters.
Of cathode, and an electrolyte containing qlb of copper sulphate and z lb of sulphuric acid per gallon, all the gold, platinum and silver present in the crude copper anode remain as metals, undissolved, in the anode slime or mud, and all the lead remains there as sulphate, formed by the action of the sulphuric acid (or S04 ions); he found also that arsenic forms arsenious oxide, which dissolves until the solution is saturated, and then remains in the slime, from which on long standing it gradually dissolves, after conversion by secondary reactions into arsenic oxide; antimony forms a basic sulphate which in part dissolves; bismuth partly dissolves and partly remains, but the dissolved portion tends slowly to separate out as a basic salt which becomes added to the slime; cuprous oxide, sulphide and selenides remain in the slime, and very slowly pass into solution by simple chemical action; tin partly dissolves (but in part separates again as basic salt) and partly remains as basic sulphate and stannic oxide; zinc, iron, nickel and cobalt pass into solution - more readily indeed than does the copper.
He left everything to his omnipotent minister, Count Heinrich Briihl, and Briihl entrusted the government of Poland to the Czartoryscy, who had intimate relations of long standing with the court of Dresden.
Clement's familiarity with the Old Testament points to his being a Christian of long standing rather than a recent convert.
They are violet-red in colour, and on boiling or long standing with dilute acids they pass into the corresponding roseo-salts.