the mill to be ground and placed in sacks. Scores of men assist in the harvest by loading small "dump-cars," or trollies, on portable rails, the cargo being finally dumped on the large train or else carried direct to the manufactory. [Illustration: _From a_] A SALT-PLOUGH AT WORK. [_Photograph._] The interesting history of the salt industry in California is largely associated with the name of Plummer Brothers, who in 1864, in the person of the late Mr. J. A. Plummer, made the first genuine attempt to produce a first-class domestic salt. The extensive and striking premises of this noted firm in Centreville, California, are shown in the two illustrations on the next page. Situated as the district is close to the bay, the industry is dependent to a certain extent upon the tides. The early spring tides have little effect in drawing away the impurities which the river-floods bring into the bay; but the tides of June and July, rising as they do to a height of 6ft. or 7ft., fill the marshes with a water fairly pure. The salt-makers have prepared for this influx of water by making reservoirs in large clay-bottomed tracts of marsh land, and have cleared them of weeds and grass. The water flows in and fills the reservoirs to a depth of from 15in. to 18in., and the gates are then closed. [Illustration: _From a Photo. by_] TRANSPORTING SALT IN WHEEL-BARROWS. [_Mr. C. A. Plummer._] [Illustration: _From a Photo. by_] SALT CRYSTALLIZING PONDS. [_Mr. C. A. Plummer._] [Illustration: _Photo. from_] SALT-MAKING IN RAJPUTANA. [_Rev. Henry Lansdell, D.D., Blackheath._]