Yet it remained for a wasp and Gottfried Keller to bring us out of the era of rag paper. Together, they saved us from a retardation of universal thought. Therefore, let us consider the agents.
First, the wasp. She was one of a family of several hundreds, born in the Hartz Mountains in the year 1839. When death claimed most of her relatives at the end of the season allotted as the life of a wasp, this survivor, a queen wasp, became the foundress of a family of her own. She built her nest of selected wood-fibers, softened them to a pulp with her saliva, and kneaded them into cells for her larvæ. Her family came forth in due course, and their young wings bore them out into the world. The nest, having served its purpose, was abandoned to the sun and the rain.
Maeterlinck, who attributes emotions to plants and souls to bees, might wrap a drama of destiny about this insect. She would command a leading place in a cast which included the butterfly that gave silk to the world, the mosquito that helped to prove the germ theory of disease, and the caterpillar that loosed the apple which revealed the law of gravitation to Sir Isaac Newton.
As to Keller, he was a simple German, by trade a paper-maker and by avocation a scientist of sorts. One day in 1840—and this marks the beginning of the accidents—returning home from his mill, he trod upon the abandoned nest. Had not the tiny dwelling been deserted, he probably would have cherished nothing but bitter reflections about the irascibility of wasps. As it was, he stooped to see the ruin he had wrought.
The crushed nest lay soft in his hand, soft and pliable, and yet tough in texture. It was as soft as his own rag-made paper. It was not paper, and yet it was very much like paper. Crumbling It in his fingers, he decided that its material was wood-pulp.
Keller was puzzled to know how so minute a creature had welded wood into a paperlike nest. His state of mind passed to interest, thence to speculation, and finally to investigation. He carried his problem and its possibilities to his friend, Heinrich Voelter, a master mechanic. Together they began experiments. They decided to emulate the wasp. They would have to granulate the wood as she had done. The insect had apparently used spruce; they used spruce under an ordinary grindstone. Hot water served as a substitute for the wasp's salivary juices.
Their first attempts gave them a pulp astonishingly similar to that resulting from the choicest rags. They carried the pulp through to manufacture, with a small proportion of rags added—and they had paper. It was good paper, paper that had strength. They found that it possessed an unlooked-for advantage in its quick absorption of printing-ink.
Have you followed the chain of accidents, coincidences, and fortunate circumstances? Suppose the wasp had not left her nest in Keller's path. What if he had been in haste, or had been driven off by the queen's yellow-jacketed soldiers? What if he had no curiosity, if he had not been a paper-maker, if he had not enjoyed acquaintance with Voelter? Wood-pulp might never have been found.
Leaving Gottfried Keller and Voelter in their hour of success, we find, sixteen years afterward, two other Germans, Albrecht and Rudolf Pagenstecher, brothers, in the export trade in New York. They were pioneering in another field. They were shipping petroleum to Europe for those rising young business men, John D. and William Rockefeller. They were seeking commodities for import when their cousin, Alberto Pagenstecher, arrived from the fatherland with an interesting bit of news.
"A few weeks ago, in a paper-mill in the Hartz, I found them using a new process," he said. "They are making paper out of wood. It serves. Germany is printing its newspapers on wood-pulp paper."