premise: John Deighton was forced to pursue other lines of work.
hypothesis: John Deighton . Next , Deighton worked a gold claim in California , along with many others , until February 1858 when there was news of gold further north in a British territory known as New Caledonia . By 1864 , Deighton was forced to pursue other lines of work as he developed health problems ( swelling of the legs and feet ) .