and rapeseed were mentioned. He explained the different uses of each, and how each contributes to the growth of the colonies. Grasses mentioned are hard grass, spire grass, "foreign artificial" grass and two English grasses: La Lauren and St. Foin. “As we ought to propagate various sorts of Grain and Grass, that so we may have the advantage of all sorts of Land and Seasons, so we should adapt out Tillage to the various sorts if Land which we Improve”. The fourth essay consisted of discussions of husbandry with other farmers and scientists. Eliot aimed to demonstrate to the colonists that improvements were needed by indicating how alternative techniques were effectively used elsewhere. Other farmers comment to Eliot about how the ideas from his previous essays have affected them; for example, seaweed, wet leaves and sea salt might be used for fertilizer. The fifth essay concerned problems with tillage (in this case, the land which is worked – by plowing, sowing and harvesting crops). Eliot adapted ideas which had been recently formulated by Jethro Tull, an English writer on tilling. Eliot took some of Tull's inventions and improved them; for example, there had been little improvement in Tull's plow (developed 23 years earlier in England). Eliot attempted to improve Tull's machine, with the aid of President Clap (of Yale College) and Behoni Hillyard, a wheelwright in Killingworth. Eliot's plow was less expensive and easier to use than Tull's plow; however, when he tested his drill plow in the fields he discovered that the wheels did not work well in the rough, rigid soil. After many changes, he finally finished his version of the drill plow; some of his readers remained skeptical, fearing that “The drill plows would never come into general use”. The sixth essay took longer to write than the others, touching on the production of silk and mulberry bushes. Eliot asserted that his essays reached as far as Great Britain, where his philosophy and ideas were also applied. He wrote, “When I first applied myself to the writing Essays upon Field-Husbandry, I did not expect those small Tracts, calculated to our soil, Meridian, and Climate, would ever extend farther than to a small Circle of Neighbors”. Since the essays had found a wider audience, he thought it would be wise to “apply ourselves to the raising silk”. He asked an anonymous farmer who had been growing silk in