1848年的一天，—位名叫马歇尔的木匠看到水中一些浅黄色的颗粒。他弯腰拾起并把颗粒拿给他的伙伴萨特。

• One day in1848 a carpenter named Marshall, noticed some bright yellow particles in the water, bent down to pick them up and took them to his partner, Mr. Sutter.