112 ADAMS. 



received some investigation is situated near Bocane. Alluvial clays . are 

 found in man}'' places and are employed in burning- ordinary red pottery 

 and soft brick. The pottery industry is carried on principally along the 

 Pasig Eiver and in the eastern part of the delta of the Pampanga Eiver. 

 The usual product is an unglazed red ware, which is sometimes given 

 a wash of red ocher before it is burned, but at San Pedro Macati semi- 

 vitrified wares are made. A porcelain factory was established at Manila 

 on the banks of the Pasig at a place called Mandaloyan, by Don Enrique 

 Zobel. The foreman in charge of the work was a Filipino who had 

 learned to make pottery during a residence in Japan. The clays which 

 were employed were obtained from Los Baiios, Boeaue and Nasugbu. A 

 fair grade of porcelain and glazed pottery was produced. In so far as 

 the writer has been able to learn, this Avas the first attempt to establish 

 the. porcelain industry in the Philippine Islands. It did not meet with 

 success, owing to the many difficulties which were encountered in obtain- 

 ing materials of suitable character and of uniform quality. Enough 

 was done to demonstrate that there is a future for the industry. The 

 factory is now dismantled. The Bureau of Education has taken some 

 steps to teach the making of pottery and stoneware in trade schools, and 

 at the present time experimental work is being carried on. 



SALT. 



Common salt is made by the evaporation of sea water at Parariaque 

 and Batangas. The brine is usually filtered through a bed of gravel and 

 evaporated in a tank having a lime mortar floor. No refined salt is 

 produced in the Islands. 



LIME. 



Lime is burned from coralline limestones and corals obtained from 

 reefs on the beaches of Tayabas, Batangas, and Balayan Bays and near 

 Nasugbu. At Malabon seasbells are used. Small limekilns are situated 

 on the Pagbilao Islands and near Tayabas and Lucban. Limestone, 

 obtained near by, is used. The only important source for limestone is 

 the exposure in Binangonan Peninsula. The lime is burned by piling 

 it over wood and the product is slaked before being sent to market. In 

 fact, quicklime can not usually be obtained in the Islands unless it is 

 by special request. One reason for this seems to be the use of water 

 transportation and the loading of the lime into lyancas and cascoes which 

 do not suitably protect it from water, and in case of the entrance of water 

 would cause trouble by the heating of the lime when slaking. Small 

 quantities of lime are sometimes burned for the manufacture of sugar 

 at interior points, near the sugar mills, and for this purpose shells or 

 coral are commonly used. 



