GEOLOGICAL RECONNAISSANCE OF LEYTE. 355 



SUMMARY OF MIJTERAL EESOUECES. 



Gold. — The mines in Panaon Island have been abandoned for several 

 years. If the veins permit of favorable mining and a yield of from $6 

 or $7 per ton can be obtained, as reported by Ashbnrner, it may be worth 

 while to reopen the mines. 



Coal. — The commercial value of the coal near Calublan probably 

 depends more upon the character of the beds and facilities for delivering 

 it at the sea coast, than upon the quality, since most Philippine coals 

 are of about the same grade. Concerning the nature and location of the 

 coal there are at present only hearsay reports. 



Sulphur. — Goodman, from an examination of the surface estimated 

 that there are about 3,000 tons of sulphur in sight at the To-od and 

 Pangujan solfataras south of Burauen. At the mining claim San An- 

 tonio on Bilirau' Island there are 400 tons and at the Santa Eosalia 

 claim the amount .is inappreciable. He suggests the deduction of 25 per. 

 cent for loss in mining and treating. The cost of transportation from 

 the Burauen deposits he considered prohibitive and the Bilirau deposits 

 too small to warrant the cost of installing machinery. However, trans- 

 portation from Burauen to Tacloban will soon be improved by the com- 

 pletion of a good road, and since the remaining distance is short it may 

 be that the sulphur can be exploited at a profit. 



Petroleum. — No wells have been drilled and no study of the geologic 

 structure near the oil showings has been made. There is some talk of 

 prospecting at the showings near Villaba and on Biliran, but at present 

 there is lack of capital for such an enterprise because of the attendant 

 risk. 



Stone. — Thus far two quarries have been opened for road material, 

 one just west of Tanauan and the other at Palo. Ko doubt others will 

 be developed in order to obtain stone of good quality for road building. 

 Up to the present time gravel has been extensively used, but with better 

 equipment crushed stone will be employed for road surfacing and a 

 diligent search will probably reveal that it can be made available at many 

 places. 



Clay. — At present, ordinary pottery is manufactiired at Tanauan and 

 probably at some other towns which were not visited. 



Pormerly brick kilns were operated for burning soft brick at Baybay, 

 but after supplying the local demand they were allowed to fall into disuse. 



BIBLIOGRAPHY. 



Jagor, F. Reisen in den Philippinen. Bferlin, Wiedmannsohe Buclihandlung 

 (1873) XVI-381; 1 map. This work contains the paper by Roth catalogued 

 separately. A Spanish edition, "Viajes por Filipinas," translated from the 

 German, was published in Madrid in 187S ; and an English edition, "Travels 

 in the Philippines," was published in London in 1875. The English transla- 

 tion is very poor and omits Roth's paper. 

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