The American, go lately the possessor of California, seems to have wakened up a new scene in its fine valleys, and already we have records more pleasing and humanizing than those of the gold hunter thirsting after sudden riches. Laying on our table, and inviting perusal, we picked up a month later than it deserved, the Official Report of the California State Agricultural Society's Third Annual Fair, Cattle Show, and Industrial Exhibition, held at San Jose, the last fall. Its publication marks an era in the history of this Union which it is well not to pass over unnoticed. A whole new country, falling from the hands of an inert race into the possession of a new and energetic people, has been transformed; the results of energy are here pointed out in most energetic language, and in a spirit that has already swept the lazy Spaniard from the soil; we hear no more of him than of the red Indian in Pennsylvania.

California possesses many advantages of soil and climate; the cultivators are turning their attention, in some places, to tropical fruits, with eminent success, and soon oranges, Ac, will form staples which will prevent the need of importing the great luxuries of Central America. Camellias, in many parts, prosper to perfection. The lemon, lime, the citron, the mango, the sapota, aguacote, or butter-fruit, the pepper-tree, cotton, foreign grape-vines in every variety, the soft-shelled almond, sugar-cane, pomegranate, pine-apples, cotton, the olive, are among the products which do or promise well.

The Report mentions so many successful cultivators with their thousands of trees and vines, that we are obliged to omit the majority. At Marysville, Beach and Shephard have 40,000 peach-trees, 5,000 apple, and 5,000 pear, 3,000 cherry, 2,000 plams, and ^40,000 grape-vines, with a large amount of ornamental trees and shrubbery. G. G. Briggs has nearly 200,000 peaeh, and 20,000 nectarine and apricot-trees. Gen. Sutter, a great collection, and a garden and grounds in excellent taste. In some cases, most of the labor is performed by Indians. The mulberry for the silkworm, is getting into vogue. Mr. Delmas has eighty varieties of grapes, whose thrift and luxuriance afford strong evidence that they could not have found a more genial climate. He has 24,000 grape-vines in all. Mr. Wm. Lent and E. L. Gould, number their fruit-trees by the thousand. Mr. J. Cook grows the Black Morocco Grape in perfection, and all these grapes are of open air culture. Mr. F. G. Appleton has a hundred swarms of bees, doing extremely well. The swarms which Mr. A. had last spring, have produced from two to four swarms each. The honey which has been taken from them is of the finest quality.

The experiments which have been thus far made with bees, give every assurance that there is no country in the world superior to California for the honey bee.

Peach-trees budded the previous year on small seedlings, in twelve months were eighteen inches in circumference at six inches above the ground. The fruit of four old pear-trees, grafted with Bartietts eighteen months, had been sold for $160. Mr. Lewellyn has 25,000 apple-trees, and grew three apples upon grafts inserted the previous winter, and only a few inches from the ground. Mr. Daniels' garden is filled with a great variety of choice fruit-trees and plants, which are cultivated with a skill which few possess in a higher degree than Mr. Daniels, who is one of the foremost minds in California. Smith and Winchell have 100,000 apple-trees, of eighty varieties. Messrs. McMurtrie were offered $10,000 for the produce of 100 acres of potatoes. Messrs. Thompson have 18,000 trees, and a vineyard of 8,000 vines - the latter protected from the winds by belts and avenues. Their orchard, which the previous year looked, from a distance like rows of half-grown corn, was the next, a forest in which a man may hide himself. Their plan is to plough deep, dig wide and deep holes, and work the ground from February until July, allowing no grass or weeds to grow among the trees.

Major Barbour fully expected to realize from $15,000 to $20,000 from two acres of melons, selling two to three hundred dollars worth a day. Twelve pumpkins raised in Los Angeles, weighed over fifteen hundred pounds. Sausevain Brothers have 60,000 vines, and made two thousand and eighteen gallons of wine, and some brandy; and they have two good wine cellars - one 124 by 15 feet, the other, 90 by 16 feet. California seems destined to stand first among wine producing States. Mr. Cardwell raised a sweet potato weighing twenty-three pounds; they keep growing all the season. Mr. Smith raised a beet measuring three feet six inches in circumference. One tree of California Pear produced, last year, $250. In two small valleys are found one million of grape-vines. And finally, they even turn their steamboat explosions to account, for "on the Colorado, forty miles below Fort Yuma, in August of 1854, a steamer transporting Government stores was blown up; and the next year, in places where the sacks had fallen, a fine growth of barley was found!"

And to conclude: "Of the Gloria mundi there were nine specimens, one of which was so enormously large that your Committee feel almost hesitant about giving its weight and measurement. It was seventeen inches in circumference each way, and weighed two pounds three and one-half ounces. It was of the most perfect form, and, in all respects, the most noble specimen of an apple we have ever seen. Had your schedule allowed a premium for the finest specimen, this would certainly have claimed it; but as we were compelled to consider extent of variety also, we recommend a special premium for this of a framed diploma." Grateful Committee, and happy California! We must send out an agent, or go ourselves, for the half does not seem to be generally known. We are a wonderful go-ahead people, and it is only surprising we do not yet own Cuba, and the right of way to the placers.