DIVISION EIGHT — SCIENCE. 549 



northward into the body of the mountain and southwest down into L,as 

 Flores Canyon. The vein varies from two and one-half to four feet thick. 



"In Las Flores Canyon, at an elevation of about 2,300 feet above 

 sea level, is the most extensive opening that has ever been made into this 

 Pasadena mineral vein. It has been traced here for about a mile, and claims 

 staked at every available point, their recorded names being "Golden Star," 

 "Jessie Marie," " Altadena," "Pasadena," "Monitor," and "Bald Eagle." 

 At the " Golden Star " mine a shaft has been sunk, following the dip of the 

 vein down 100 feet — at an angle of 45° for 65 feet, then increasing 

 to about 60° of dip. This lower section became too dangerous by reason of 

 foul air, called "fire damp," and it was boxed off for the present, and a tun- 

 nel run westward, which had been extended fifteen feet when I was there in 

 September, 1893. The descending shaft was excavated four and one-half feet 

 high and six feet wide ; and the first sixty-five feet of it is timbered up solid 

 enough for a railroad tunnel. To provide ventilation, a hot air furnace was 

 kept burning at the mouth of the shaft and a draft-pipe run down to the 

 workmen at the lower end of it, new joints being added as the tunnel pro- 

 gressed. A good wagon road extends up to within about 150 feet of the 

 mouth of the shaft and its dumpyard ; and at this road-point the company 

 has staked ground for a quartz mill of their own. Wm. Twaddell, the 

 superintendent and chief owner of these mines, has bought the house and 

 farm in the canyon, known to old settlers in Pasadena as the "Forsyth 

 ranch." It has a priority water right in the canyon, which can be used to 

 run the mill, and serve afterward for domestic and irrigation purposes just 

 as well as it does now. Messrs. J. T. Best, Samuel Wells, and Thomas 

 Armstrong are members of this mining company ; and there are two others 

 interested merely as capitalists or silent partners. I visited this mine Sep- 

 tember 13, and again on November 24, 1893; there was then twenty to 

 twenty-five tons of ore on the dump, and I gathered from it pocket samples 

 of auriferous quartz, silver chloride, horn silver, iron pyrites, iron oxide 

 rock, chloritic talcose shale — or, in plain English, green clay, sometimes 

 miscalled " soap-stone " ; gold sulphide, gold-bearing crude porphyry, and 

 some red, pulverulent ore with flour of gold diffused. I estimated that 

 probably one-fourth of the ore on this dump was "pay-rock," and the rest 

 doubtful. The owners estimated its value to average $10 per ton, claiming 

 their assays to have yielded from $3 to $14.29 per ton. The assays for 

 Twaddell were made by Thos. Price of San Francisco, formerly State min- 

 eralogist, , and an expert authority in such work. (The crude porphyry from 

 one of the Las Flores water tunnels assayed $3.20 of gold per ton.) The 

 owners claim to be experienced miners, and seem to be well satisfied that 

 they have a good property in these mines, which they intend to work as a 

 regular, legitimate productive industry."* 



[Note. — I visited Las Flores again October 23, 1894. A new water 

 tunnel had been worked into the east wall of the canyon about ys of a mile 

 up from the claim staked for a mill site, to a depih of 125 feet, running east 

 through a moist mineral vein, and a branch of 35 feet running north through 

 a dry ore vein. It was the intention to continue the eastward tunnel 125 



* M. E. Wood came to Pasadena in 1S76 ; and in 1S81 he and a miner from Arizona named Redway 

 discovered mineral rock in Las Flores canyon. They staked a claim there, and had some of the ore 

 assayed. It yielded a small amount of both gold and silver, but not enough to pay for working, and 

 they abandoned it. 



