Difficultly [adverb]

This fragrant residue was difficultly soluble in water and the solution reduced silver nitrate in ammonia.

The ions of the two metals may be separated and identified by means of difficultly soluble salts.

The word "difficulty" was sometimes employed as an adverb; herein it is converted to "difficultly" in this usage.

It is insoluble in water and ether, difficultly soluble in the hot; and fairly soluble in aniline.

This is the difficultly fusible Bohemian tube-glass, so valuable in chemical manipulations.

Ignited alumina is difficultly soluble in acids; it is not reduced by hydrogen at a red heat.

Such lakes are the difficultly soluble salts which constitute the dyeing materials of stuffs.

It is difficultly but perfectly fusible before the blowpipe, with borax and salt of phosphorus.

From most difficultly-situated assembly trenches, an attack had been launched against a position of considerable strength.

For substances of a difficultly combustible nature he adopted the method in common use to-day, viz.