This section is from the book "Fishing: When, Where, And How To Fish Without Live Bait", by William Tweedie. Also available from Amazon: Fishing: When, Where And How To Fish Without Live Bait.
You may also make for yourself, but it is better to buy it. A horse-hair ready-made line is the best for general purposes. We remember a little boy wanted to make a line for himself, who went to a stable where large white cart-horses were kept. He began to pull the long hair from their tails, when one of them kicked him in the head. His father and mother cried very much, and the doctors did all they could to save him, but he died the next day, and instead of fishing through the beautiful summer, he was carried away and buried in the cold grave. Next to horse-hair a good silk one will be useful. For very small fish, a line entirely of "gut" will be found very successful. Lines are best of a light colour.