36 THE BUREAU OF SCIENCE 



Sugar Industry in the Philippine Islands, in the Louisiana 

 Planter. 



DIVISION OF MINES 



Personnel. — Mr. V. E. Lednicky was appointed chief of the 

 division of mines effective July 1, 1916, to succeed Mr. Wallace 

 E. Pratt, who had been on vacation since July 15, 1915, and who 

 was granted retirement effective April 1, 1916, under the provi- 

 sions of Act No. 2589. During the vacation of Mr. Pratt, Mr. 

 Lednicky served as acting chief. Mr. John P. Goldsberry, petrol- 

 ogist and geologist, reported for duty in Manila January 18, 

 1916, and since that date has handled the assaying and artesian 

 well sample examinations. The division of mines has been very 

 seriously handicapped by the smallness of the staff during the 

 year, but an attempt has been made to handle as much as pos- 

 sible of the routine work presented. We have not been able to 

 do all of the field work requested. The interest shown in mining 

 by the Government and others warrants a considerably increased 

 geological personnel. 



Routine. — About 300 mineral specimens were examined and 

 200 consultations were had with individuals seeking geological 

 information. A total of 517 assays, 11 bullion smeltings, and 

 93 placer weighings have been performed. The new Heusser 

 assay balance has given entire satisfaction and has increased 

 the speed and accuracy of weighings. A few leaching and amal- 

 gamation tests were made. One hundred ninety artesian well 

 strata cuttings received during the year, together with the sam- 

 ples left over from the former year, have been examined. The 

 usual drafting necessary in the preparation of maps and draw- 

 ings for publication in the Philippine Journal of Science and 

 other Bureau of Science publications has been carried on. The 

 large relief map of the Philippine Islands, which we made for 

 the Bureau of Science exhibit in San Francisco, has been rebuilt 

 and recolored, and the legend with regard to the key to geology 

 and the principal mineral localities has been added to it. 



Field work. — Although the time available for field work was 

 very limited, a comparatively large amount of it was done. Mr. 

 Lednicky spent about half of his time on travel order. Prac- 

 tically all of this was spent in examination work for which the 

 Bureau of Science received expenses and pay. Information 

 valuable to the Bureau of Science was gathered on all of these 

 trips, and considerable help was given the mining industry. Dur- 

 ing the year I issued the following travel orders for geological 

 work : 



