This is more than twice the average yield obtained from ordinary unselected hemp seed. Annual Reports of the Department of Agriculture, p.6. This paper and similar bits of paper surviving from the next century are thick, coarse, and uneven in their texture. They are all made of pounded and disintegrated hemp fibres. Until the early 19th century, the only raw material available for paper making was rags.
Rags are worn-out clothes.
With the industrial revolution, the need for paper began to exceed the available rag supply. Hemp pulps are generally blended with other wood- pulps for paper production.