The purple of Scripture—The sac containing the purple dye—Curious change of colour—Mode of obtaining the dye—The Tyrian purple—The king of the Ethiopians and the purple robe—The professional purple dyers—Various words expressive of different shades of purple.

Leaving the higher forms of animal life, we now pass to the Invertebrated Animals which are mentioned in Scripture.

As may be inferred from the extreme looseness of nomenclature which prevails among the higher animals, the species which can be identified are comparatively few, and of them but a very few details are given in the Scriptures.

Taking them in their zoological order, we will begin with the Molluscs.

We are all familiar with the value which was set by the ancients upon the peculiar dye which may be called by the name of Imperial Purple. In the first place, it was exceedingly costly, not only for its richness of hue, but from the great difficulty with which a sufficient quantity could be procured for staining a dress. Purple was exclusively a royal colour, which might not be worn by a subject. Among the ancient Romans, during the times of the CÆsars, any one who ventured to appear in a dress of purple would do so at the peril of his life. In the consular days of Rome, the dress of the consuls was white, striped with purple; but the CÆsars advanced another step in luxury, and dyed the whole toga of this costly hue.

The colour of the dye is scarcely what we understand by the term "purple," i.e. a mixture of blue and red. It has but very little blue in it, and has been compared by the ancients to the colour of newly-clotted blood. It is obtained from several Shell Fish belonging to the great Whelk family, the chief of which is the Murex brandaris.

The shell is shaped something like that of a whelk, but is very smooth and porcelain-like, and is generally white, ornamented with several coloured bands. It is, however, one of the most variable of shells, differing not only in colour but in form. It always inhabits the belt of the shore between tide-marks, and preys upon other Molluscs, such as the mussel and periwinkle, literally licking them to pieces with its long riband tongue.

This tongue is beset with rows of hooked teeth, exactly like the shark-tooth weapons of the Samoan and Mangaian Islanders, and with it the creature is enabled to bore through the shells of mussels and similar Molluscs, and to eat the enclosed animal. It is very destructive to periwinkles, thrusting its tongue through the mouth of the shell, piercing easily the operculum by which the entrance is closed, and gradually scooping out the unfortunate inmate.

Even the bivalves, which can shut themselves up between two shells, fare no better, the tongue of the Dog-Whelk rasping a hole in the hard shell in eight-and-forty hours.

In order to procure the animal, the shell must be broken with a sharp blow of a small hammer, and the receptacle of the colouring matter can then be seen behind the head, and recognised by its lighter hue.

When it is opened, a creamy sort of matter exudes. It is yellowish, and gives no promise of its future richness of hue. There is only one drop of this matter in each animal, and it is about sufficient in quantity to stain a piece of linen the size of a dime.

The best mode of seeing the full beauty of the purple is to take a number of the Molluscs, and to stain as large a surface as possible. The piece of linen should then be exposed to the rays of the sun, when it will go through a most curious series of colours. The yellow begins to turn green, and, after a while, the stained portions of the linen will be entirely green, the yellow having been vanquished by the blue. By degrees the blue predominates more and more over the yellow, until the linen is no more green, but blue. Then, just as the yellow yielded to the blue, the blue yields to red, and becomes first violet, then purple, and lastly assumes the blood-red hue of royalty.

The colour is very permanent, and, instead of fading by time, seems rather to brighten.

In some cases the ancients appear not to have troubled themselves with the complicated operation of taking the animal out of the shell, opening the receptacle, and squeezing the contents on the fabric to be dyed, but simply crushed the whole of the Mollusc, so as to set the colouring matter free, and steeped the cloth in the pulp. Tyre was one of the most celebrated spots for this manufacture, the "Tyrian dye" being celebrated for its richness. Heaps of broken shells remain to the present day as memorials of the long-perished manufacture.

The value which the ancients set upon this dye is shown by many passages in various books. Among others we may refer to Herodotus.

Cambyses, it appears, had a design to make war upon three nations, the Ammonians, the Carthaginians, and the Ethiopians. He determined to invade the first by land, and the second by sea; but, being ignorant of the best method of reaching the Ethiopians, he dispatched messengers to them, nominally as ambassadors, but practically as spies. He sent to the King of Ethiopia valuable presents—namely, a purple mantle, a golden necklace and bracelet, an elaborate box of perfumed ointment, and a cask of palm-wine, these evidently being considered a proof of imperial magnificence.

The Ethiopian king ridiculed the jewels, praised the wine, and asked curiously concerning the dye with which the purple mantle was stained. On being told the mode of preparation, he refused to believe the visitors, and, referring to the changing hues of the mantle and to the perfume of the ointment, he showed his appreciation of their real character by saying that the goods were deceptive, and so were the bearers.

The Hebrew word argaman, which signifies the regal purple, occurs several times in Scripture, and takes a slightly different form according to the Chaldaic or Hebraic idiom.

For example, we find it in Exod. xxv. 4: "This is the offering which ye shall take of them: gold, and silver, and brass,

"And blue, and purple, and scarlet, and fine linen," &c. &c.

It occurs again in 2 Chron. ii. 7: "Send me now therefore a man cunning to work in gold, and in silver, and in brass, and in iron, and in purple, and crimson, and blue."