structural:summarization
New crops

The Royal Society of London for Improving Natural Knowledge, established in 1660, almost immediately championed the potato, stressing its value as a substitute for wheat (particularly since famine periods for wheat overlapped with bump periods for potatoes). The 1740 famines buttressed their case. The mid 18th century was marked by rapid adoption of the potato by various European countries, especially in central Europe, as various wheat famines demonstrated its value. The potato was grown in Ireland, a property of the English crown and common source of food exports, since the early 17th century and quickly spread so that by the 18th century it had been firmly established as a staple food. It spread to England shortly after it took hold in Ireland, first being widely cultivated in Lancashire and around London, and by the mid-18th century it was esteemed and common. By the late 18th century, Sir Frederick Eden wrote that the potato had become "a constant standing dish, at every meal, breakfast excepted, at the tables of the Rich, as well as the Poor."