crofting. After partial crop failures in 1836 and 1837, a severe outbreak of potato blight arrived in Scotland in 1846. Blight continued to seriously affect the Highland potato crop until about 1856. This was famine of a much greater scale and duration than anything previously experienced. By the end of 1846, the north-west Highlands and the Hebrides had serious food shortages, with an estimated three quarters of the population with nothing to eat. The Highland Potato Famine started a year after potato blight had first struck Ireland. The knowledge of the Irish catastrophe helped mobilise a response to the Highland crisis, with government action, the establishment of a large charitable fund (the Central Board for Highland Destitution) and much more responsible landlord behaviour than seen in Ireland. The richer landlords, such as the Duke of Sutherland, were able to fund their own famine relief for their tenants. Some, already overstretched by large debts, were bankrupted by providing the necessary relief. The landlord of most of Islay, Walter Frederick Campbell, was a spectacular example. Another whose benevolence during the crisis brought bankruptcy was Norman Macleod of Macleod, owner of one of the two major estates in Skye. Conversely, some landlords were criticised for using the voluntarily raised relief funds to avoid supporting their tenants through the crisis. A few were recipients of strongly critical letters from senior civil servants, with threats that the government would recover the cost of famine relief from those who could provide it, but chose not to. Clearance and emigration were an integral part of the Highland potato famine; the length and severity of the crisis seemed to leave little alternative. The choice faced by the government was between indefinitely continuing with charitable efforts and public works, or removing the excess population permanently. Rumours circulated, from 1849, that the government planned to introduce an 'able-bodied Poor Law', so formally putting the potentially crippling burden of famine relief on each parish (and hence on the landlord); the Central Board made clear that they would wind up their relief effort in 1850. The new Highland landowner class (who had bought financially failing estates) and the remaining wealthier hereditary landlords had the funds to support emigration of their destitute tenants. The result was that almost 11,000 people were provided with "assisted passages" by their landlords between 1846 and 1856, with the greatest number travelling in 1851. A further 5,000 emigrated