_Yield and Profits._--The yield is quite small on the gravelly soil, at the most being three tons of green grapes to the acre, on richer land from six to seven tons, and in rare instances ten tons to the acre. I heard of one vineyard where the owner had sold from twenty acres of Muscatels thirty-three tons of raisins and fifty-six tons of green grapes, equal to about 155 tons from the lot. Another lot of three-year Muscatels bore ten tons to the acre,--indeed a very unusual yield anywhere for Muscatels. I hear reports of some wonderful yields and high profits, but am informed by the most experienced and trustworthy that $125 per acre is an average profit which can be relied upon year after year. The first Muscat vines were planted near Orange, now the station of McPherson, about 1873, by McPherson Bros. The acreage in grapevines in the Orange county district was about 8,000 acres; but probably over half of it is wine grapes. The highest output of raisins was 170,000 boxes of twenty-pounds each. SAN DIEGO AND EL CAJON. _Location and Acreage._--The El Cajon and Sweetwater valleys are the raisin centers of San Diego county. The former contains about four thousand acres of Muscat vines, the latter about five hundred acres. Magnificent-looking Muscat grapes are also grown within three miles of San Diego. Escondido is by many pronounced superior for raisin grapes to any of the other places; but El Cajon is the present center of the raisin industry, and is likely to remain so for years. The raisin-growing section of the two valleys lies from about fifteen to seventeen miles from the coast line, and at an altitude of from 450 to 500 feet. The arable land in El Cajon valley contains 50,000 acres, or perhaps less, and consists of the rolling bottom of the valley, but which can in no way be classed as bottom land. The land partakes more of the characteristics of mesa or upland, and extends on all sides, slightly undulating upon the sides of the hills. Lower hills and behind them, again, higher hills surround the valley, and the high peaks beyond the Cuyamaca Mountains reach 4,500 feet or more. None of these hills or mountains in sight are covered with timber of any kind, and even the valleys are without the usual sycamores. Only in the very narrow bottom of the creek is there a vegetation of willows and shrubbery.