The general characters of a soap are a certain greasiness to the touch, ready solubility in water, with formation of viscid solutions which on agitation yield a tenacious froth or " lather," an indisposition to crystallize, readiness to amalgamate with small proportions of hot water into homogeneous slimes, which on cooling set into jellies or more or less consistent pastes.
Marine Soap. - These soaps are so named because they are not insoluble in a strong solution of salt; hence they form a lather and can be used for washing with sea-water.
Soap containing small proportions of glycerin, on the other hand, forms a very tenacious lather, and when soap bubbles of an enduring character are desired glycerin is added to the solution.
Playfairii, when shaken with water forms a slight but permanent lather, and on this account is used by the Somali women for cleansing their hair, and by the men to whiten their shields; it is known as meena h¢rma in Bombay, and was formerly used there for the expulsion of the guinea-worm.
Natural razor strops, and the expressed juice of the leaves will lather in water like soap. In the Madras Presidency the plant is extensively used for hedges along railroads.
Why he had to go he did not know; but after his after-dinner nap he gave orders to saddle Mars, an extremely vicious gray stallion that had not been ridden for a long time, and when he returned with the horse all in a lather, he informed Lavrushka (Denisov's servant who had remained with him) and his comrades who turned up in the evening that he was applying for leave and was going home.
The horses began to lather and the men to flush.