the Coast Survey map of the city, on which the two points I have mentioned near Steam-Boat Point are marked X and Y.

Second P. S. - On another visit to Steam-Boat Point, made since the above was written, I find an excellent place for a water battery of six guns, which can be established at little expense. The place is marked Z on the Coast Survey map.

R. S. WILLIAMSON.

Captain, U. S. Engineers.

[Inclosure.]

Approximate estimate of a parapet and magazine for a proposed battery of twelve guns on Beale street, made under the supposition that the earth is to be taken from the street, regardless of the city grade at that locality. If the earth is to be brought from a distance an additional expense will be required.

SAN FRANCISCO.

August 1, 1863.

Lieutenant Colonel R. C. DRUM.

Assistant Adjutant-General, Department of the Pacific:

For 1,290 yards of parapet, at $1 per yard, $1,290; for 900 yards of magazine mound, at $ per yard, $900; for lumber for parapet, viz, number of feet of plank, 6,600; timber for ties, 6,000 feet; timber for back ports, 3,000 feet; posting timber, 3,000; feet; plank for facing, 3,000 feet; total number of feet for revetment, 21,600, at $30 per M, $648. For timber for magazine, viz, inner box, 550 feet; outer box, 1,200 feet; roof, 2,500 feet; passage-way, stairs, &c., 2,000 feet; total number of feet for magazine, 6,250; at $30 per cubic foot, $187. 50. For carpenter work for magazine and revetment, viz, one man for twenty-six days, at $5 per day, $130; three men for twenty-six days, at $4 per day, $312; tools, $200. Pay of overseer and foreman for thirty days, $300. Incidental expenses of survey, &c., $500. Total in gold, $4,467. 50. No estimate for platforms, as I am not informed as to the kind of guns to be used. A subsequent expense will have to be incurred for sodding the exterior and superior slopes.

Respectfully submitted.

R. S. WILLIAMSON

Captain, U. S. Engineers.

HEADQUARTERS DEPARTMENT OF THE PACIFIC.

San Francisco, Cal., August 1, 1863.

Captain A. W. STARR,
Second Cavalry California Volunteers, Chico, Cal.:

SIR: Your telegram of yesterday reporting your arrival at Chico has been received. It is the general's desire that you remain in the vicinity of Chico, giving all needful protection to whites from incursions of hostile Indians, and to friendly Indians, particularly, those residing on the ranches of citizens, against the brutish assaults of bad white men. The general desires you to consult frequently with Major Bidwell, both on account of his large experience in these difficulties and also from the fact that he is the representative of the Indian Department in that portion of the State. You will find the major reliable and truly loyal.

Very respectfully, your obedient servant,

R. C. DRUM.

Assistant Adjutant-General.