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When tested for strength, the same fibres which carried on the average 500 grains without breaking before boiling, after boiling would not bear more than 480 grains." Hence this third enemy is a boiling process, especially a long-continued one if only with water itself. If we could use coal-tar colours and dye in only a warm weak acid bath, not boil, we could get better lustre and finish.
Leaving the ship together for a walk, the surgeon, crossing the deck, smudged his white trousers with paint or coal-tar, the free application of which in unexpected places is one of the snares attending a well-appearing man-of-war.
Silk is easily dyed by the aniline and coal-tar colours, and with beautiful effect, but it has little attraction for the mineral colours. Wool. Next to silk as an animal fibre we come to wool and different varieties of fur and hair covering certain classes of animals, such as sheep, goats, rabbits, and hares.
This method has been lately practised in France on a large scale: vineyards of forty or fifty acres have been protected by placing one or two rows of pots of burning coal-tar, or of naphtha, along the north side of the vineyard, and thus keeping up a cloud of smoke for two or three hours before and after sunrise.
What is the matter with young pigs when their eyes swell shut? Before they shut they look as if there was a white milky scum over them. There is some infection present, and a good cleaning up in needed. The sows and pigs should be dipped in a warm solution of some coal-tar disinfectant, and the quarters thoroughly cleaned and disinfected or changed to a dry warm place.
Along one side ran a high broad fence, blackened over by coal-tar, and spiked and stuck with pointed nails at the top, to prevent any one from climbing over into the garden beyond. By this fence was the footpath. The carriage-road was such as no carriage, no, not even a cart, could possibly have passed along without Hercules to assist in lifting it out of the deep clay ruts.
At once a pail of coal-tar was produced, and seizing the brush which was handed him, Tom dipped it into the tar. At the first daub upon his naked body, Ben emitted a yell of despair and made a frantic effort to escape. But he was instantly seized and laid on the ground. "Ye'd better keep quiet, me hearty," Tom warned, as he rapidly smeared Ben's body from head to foot.
This disposes to a very easy and passive attitude and helps towards results. The base of the mirror may be of tin, wood or other material, and it is usually filled with a composition of a bituminous nature, the glass covering being painted with a preparation of coal-tar on its nether or convex side.
Now the use of certain coal-tar black dyes in place of logwood obviates this use of bichrome, and thus the heavy stress on the fibre in mordanting with it. It also effects economy in avoiding the use of bichrome, as well as of copper salts; but even thus, of course, other problems have to be solved before it can be finally decided which is best. Classification.
This results in pieces of wool becoming pulled out and the fleece appears ragged. After clipping the ticks migrate from the ewes to the lambs, which may become unthrifty and weak. The treatment consists in dipping the flock in a one or two per cent water solution of a coal-tar dip. Dips containing arsenic are most effective in ridding sheep of ticks. Sheep scab mite, ventral view.
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