Enemies of Books [17]
of which, for myself, I receive "_cum grano salis_." After a certain time the larva changes into a pupa, and then emerges as a small brown beetle.
2. "Oecophora."--This larva is similar in size to that of Anobium, but can be distinguished at once by having legs. It is a caterpillar, with six legs upon its thorax and eight sucker-like protuberances on its body, like a silk-worm. It changes into a chrysalis, and then assumes its perfect shape as a small brown moth. The species that attacks books is the OEcophora pseudospretella. It loves damp and warmth, and eats any fibrous material. This caterpillar is quite unlike any garden species, and, excepting the legs, is very similar in appearance and size to the Anobium. It is about half-inch long, with a horny head and strong jaws. To printers' ink or writing ink he appears to have no great dislike, though I imagine that the former often disagrees with his health, unless he is very robust, as in books where the print is pierced a majority of the worm-holes I have seen are too short in extent to have provided food enough for the development of the grub. But, although the ink may be unwholesome, many grubs survive, and, eating day and night in silence and darkness, work out their destiny leaving, according to the strength of their constitutions, a longer or shorter tunnel in the volume.
In December, 1879, Mr. Birdsall, a well-known book-binder of Northampton, kindly sent me by post a fat little Worm, which had been found by one of his workmen in an old book while being bound. He bore his journey extremely well, being very lively when turned out. I placed him in a box in warmth and quiet, with some small fragments of paper from a Boethius, printed by Caxton, and a leaf of a seventeenth century book. He ate a small piece of the leaf, but either from too much fresh air, from unaccustomed liberty, or from change of food, he gradually weakened, and died in about three weeks. I was sorry to lose him, as I wished to verify his name in his perfect state. Mr. Waterhouse, of the Entomological department of the British Museum, very kindly examined him before death, and was of opinion he was OEcophora pseudospretella.
In July, 1885, Dr. Garnett, of the British Museum, gave me two worms which had been found in an old Hebrew Commentary just received from Athens. They had doubtless had a good shaking on the journey, and one was moribund when I took charge, and joined his defunct kindred in a few days. The other seemed hearty and lived with me for nearly eighteen months. I treated him as well as I knew how; placed him in a small box with the choice of three sorts of old paper to eat, and very seldom disturbed him. He evidently resented his confinement, ate very little, moved very little, and changed in appearance very little, even when dead. This Greek worm, filled with Hebrew lore, differed in many respects from any other I have seen. He was longer, thinner, and more delicate looking than any of his English congeners. He was transparent, like thin ivory, and had a dark line through his body, which I took to be the intestinal canal. He resigned his life with extreme procrastination, and died "deeply lamented" by his keeper, who had long looked forward to his final development.
The difficulty of breeding these worms is probably due to their formation. When in a state of nature they can by expansion and contraction of the body working upon the sides of their holes, push their horny jaws against the opposing mass of paper. But when freed from the restraint, which indeed to them is life, they CANNOT eat although surrounded with food, for they have no legs to keep them steady, and their natural, leverage is wanting.
Considering the numerous old books contained in the British Museum, the Library there is wonderfully free from the worm. Mr. Rye, lately the Keeper of the Printed Books there, writes me "Two or three were discovered in my time, but they were weakly creatures. One, I remember, was conveyed into the Natural History Department, and was taken into custody by Mr. Adam
2. "Oecophora."--This larva is similar in size to that of Anobium, but can be distinguished at once by having legs. It is a caterpillar, with six legs upon its thorax and eight sucker-like protuberances on its body, like a silk-worm. It changes into a chrysalis, and then assumes its perfect shape as a small brown moth. The species that attacks books is the OEcophora pseudospretella. It loves damp and warmth, and eats any fibrous material. This caterpillar is quite unlike any garden species, and, excepting the legs, is very similar in appearance and size to the Anobium. It is about half-inch long, with a horny head and strong jaws. To printers' ink or writing ink he appears to have no great dislike, though I imagine that the former often disagrees with his health, unless he is very robust, as in books where the print is pierced a majority of the worm-holes I have seen are too short in extent to have provided food enough for the development of the grub. But, although the ink may be unwholesome, many grubs survive, and, eating day and night in silence and darkness, work out their destiny leaving, according to the strength of their constitutions, a longer or shorter tunnel in the volume.
In December, 1879, Mr. Birdsall, a well-known book-binder of Northampton, kindly sent me by post a fat little Worm, which had been found by one of his workmen in an old book while being bound. He bore his journey extremely well, being very lively when turned out. I placed him in a box in warmth and quiet, with some small fragments of paper from a Boethius, printed by Caxton, and a leaf of a seventeenth century book. He ate a small piece of the leaf, but either from too much fresh air, from unaccustomed liberty, or from change of food, he gradually weakened, and died in about three weeks. I was sorry to lose him, as I wished to verify his name in his perfect state. Mr. Waterhouse, of the Entomological department of the British Museum, very kindly examined him before death, and was of opinion he was OEcophora pseudospretella.
In July, 1885, Dr. Garnett, of the British Museum, gave me two worms which had been found in an old Hebrew Commentary just received from Athens. They had doubtless had a good shaking on the journey, and one was moribund when I took charge, and joined his defunct kindred in a few days. The other seemed hearty and lived with me for nearly eighteen months. I treated him as well as I knew how; placed him in a small box with the choice of three sorts of old paper to eat, and very seldom disturbed him. He evidently resented his confinement, ate very little, moved very little, and changed in appearance very little, even when dead. This Greek worm, filled with Hebrew lore, differed in many respects from any other I have seen. He was longer, thinner, and more delicate looking than any of his English congeners. He was transparent, like thin ivory, and had a dark line through his body, which I took to be the intestinal canal. He resigned his life with extreme procrastination, and died "deeply lamented" by his keeper, who had long looked forward to his final development.
The difficulty of breeding these worms is probably due to their formation. When in a state of nature they can by expansion and contraction of the body working upon the sides of their holes, push their horny jaws against the opposing mass of paper. But when freed from the restraint, which indeed to them is life, they CANNOT eat although surrounded with food, for they have no legs to keep them steady, and their natural, leverage is wanting.
Considering the numerous old books contained in the British Museum, the Library there is wonderfully free from the worm. Mr. Rye, lately the Keeper of the Printed Books there, writes me "Two or three were discovered in my time, but they were weakly creatures. One, I remember, was conveyed into the Natural History Department, and was taken into custody by Mr. Adam