The Life and Times of the Thunderbolt Kid_ A Memoir - Bill Bryson [117]
Though the drawing room became the focus of comfort in the home, the story doesn’t actually start there; it doesn’t start in the house at all. It starts outdoors, a century or so before Mr. Marsham’s birth, with a simple discovery that would make landed families like his very rich and allow him one day to build himself a handsome rectory. The discovery was merely this: land didn’t have to be rested regularly to retain its fertility. It was not the most staggering of insights, but it changed the world.
Traditionally, most English farmland was divided into long strips called furlongs and each furlong was left fallow for one season in every three—sometimes one season in two—so that it could recover its ability to produce healthy crops.* This meant that in any given year at least one-third of the nation’s farmland stood idle. In consequence, there wasn’t sufficient feed to keep large numbers of animals alive through the winter, so landowners had no choice but to slaughter most of their stock each autumn and face a long, lean period till spring.
Then English farmers discovered something that Dutch farmers had known for a long time: if turnips, clover, or one or two other amenable crops were sown on the idle fields, they miraculously refreshed the soil and produced a bounty of winter fodder into the bargain. It was the infusion of nitrogen that did it, though no one would understand that for nearly two hundred years. What was understood, and very much appreciated, was that crop rotation transformed agricultural fortunes dramatically. Moreover, because more animals lived through the winter, they produced heaps of additional manure, and these glorious, gratis ploppings enriched the soil even further.
It is hard to exaggerate what a miracle all this seemed. Before the eighteenth century, agriculture in Britain lurched from crisis to crisis. An academic named W. G. Hoskins calculated (in 1964) that between 1480 and 1700, one harvest in four was bad, and almost one in five was catastrophically bad. Now, thanks to the simple expedient of crop rotation, agriculture was able to settle into a continuous, more or less reliable prosperity. It was this long golden age that gave so much of the countryside the air of prosperous comeliness it enjoys still today, and allowed the likes of Mr. Marsham to embrace that gratifying new commodity: comfort.
Farmers also benefited from a new wheeled contraption invented in about 1700 by Jethro Tull, a farmer and agricultural thinker in Berkshire. Called a seed drill, it allowed seeds to be planted directly into the soil rather than broadcast by hand. Seed was expensive, and Tull’s new drill reduced the amount needed from three or four bushels per acre to under one; and because the seeds were planted at even depths in neat rows, more of them sprouted successfully, so yields improved dramatically, too, from between twenty and forty bushels an acre to as much as eighty.
The new vitality was also reflected in breeding programs. Nearly all the great cattle breeds—Jersey, Guernsey, Hereford, Aberdeen Angus, Ayrshire*—were eighteenth-century creations. Sheep likewise were successfully manipulated to become the bundles of unnatural fleeciness we see today. A medieval sheep gave about a pound and a half of wool; re-engineered eighteenth-century sheep gave up to nine pounds. Underneath all that lovely fleece, sheep were gratifyingly plumper, too. Between 1700 and 1800, the average weight of sheep sold at Smithfield Market in London more than doubled, from thirty-eight pounds to eighty. Beef cattle expanded similarly. Dairy yields went up, too.
All this was not without cost,