In Russia and in Holland quills were dipped in boiling alum-water or diluted nitric acid and then dried and clarified in a bath of hot sand. Goose quills were most used, turkey quills were prized by many, and swan quills were considered the best of all. Pens well made from swan quills often sold as high as four guineas a thousand, while goose quill pens were to be had at twenty shillings. For fine writing, crow-quills were considered best, and pen-and-ink drawings were generally produced with the black-plumed article.
In 1832, to supplement the domestic products in the manufacture of pens, 33,668,000 quills were imported into England. The trade has not been entirely killed by the advent of the steel pen, for there are yet among us representatives of the people of the olden time who delight in the pretty little squeak of the quill pen as it assists them in their literary labors.
Man early learned to rob the birds of their coverings, not only for adornment, but also for warmth. Feather beds were once reckoned as evidences of wealth. Modern science has pointed out the unhealthful condition of a bed made soft and gaseous with feathers. Few beds are now found of this sort among the better-informed people of America, but the traveler in the northern countries of Europe not only has to sleep on feathers but also under them. The down coverlet is as essential to a Danish bed as is clean linen.
The newest palace of the German emperor is furnished in accordance with the Teutonic idea, and the visitor to the palace at Strasburg, when his majesty is not there, is shown his royal bed room with its single bed and double featherings.
Downy feathers grow most abundantly on birds inhabiting cold regions. Many young birds have an abundance of downy feathers when first hatched. In some cases it is well formed before the egg is broken, firmly enclosed in a tight roll of membrane to keep it dry. On exposure to the air the membrane bursts and the down wraps the nestling in a comfortable coat.
The stronger feather sometimes grows out of the same place as the downy one in such a way that it pushes out the down to the outside of the plumage and the bird appears to have his underwear outside his overcoat.
The best eider-down is so light that three-quarters of an ounce of it will fill a large hat. It is so elastic that two or three pounds may be compressed into a ball that may be held in the hand.
Some feathers have a second shaft growing out of the end of the quill so as to form a double feather, and in rare instances there are two of these growths from one quill, making a triple feather.
Birds are warmer blooded than other animals. What is a dangerous fever temperature in the blood of man, is natural and ordinary in a bird. As birds fly rapidly, they could not live if they were perspiring creatures because they would lose heat so fast. Feathers protect them from the sudden changes of temperature and loss of heat and strength.
Feathers are important to the bird to fly with; but even for this purpose they are not absolutely necessary. There are forms of animals that fly, as the bat does, with their skin to beat the air. There were once on the earth many more skin-flying animals than there are to-day.