312 The Philippine Journal of Science wis 



has cost 90 pesos, and 300 pesos will be required to double its 

 size and improve it. 



Six thousands fry were put in the pond in May, 1915, costing 

 50 centavos per 1,000. The fish attain a length of 17.5 centi- 

 meters, and sell for 7 centavos. Were two thirds of the fish 

 to reach this size, the returns should be 280 pesos annually. At 

 present most of the money is lost because of inability to secure a 

 reliable caretaker. 



On the return to Manila a stop was again made at Subic, where 

 several ponds not previously examined were visited. 



SUBIC, POND NO. 2 



Pond No. 2 is the property of Mr. Mauricio Pagadan. It has 

 an area of 27.5 ares. Two thousand fry are put in, and satis- 

 factory results are obtained. 



SUBIC, POND NO. 3 



Mr. Santiago Pagadan owns pond No. 3. It has an area of 

 one-half hectare. One thousand fish are sold annually at 8 

 centavos each. They are left in the "seed," or small, pond for 

 nine months, and in the large pond for three months. When put 

 in the large pond they are already 12.5 centimeters long. At 

 the end of a year the fish are 30 centimeters long. This is con- 

 sidered a very satisfactory pond. 



SUBIC, POND NO. 4 



Pond No. 4 is the property of Mr. Fabian Villoria. It is by 

 far the most satisfactory and profitable pond examined. The 

 owner states that he places 20,000 fry in the pond, 18,000 of 

 which mature and are sold at 20 centavos each. The algae grow 

 very well. He does not scrape the bottom when the fish are 

 removed, but simply drains off the water and fills the pond again 

 as soon as the fish are taken out. The owner thinks that the 

 character of the bottom does not matter greatly, although he 

 thinks a sand bottom is somewhat better than a mud bottom. 

 The fish are taken out in April, and the small ones are put in in 

 October. The delay in restocking is due to the danger of the 

 pond being flooded during the rainy season. 



SUBIC, POND NO. 5 



Pond No. 5 is owned by Mr. Pedro Villamor. It has an area 

 of a little more than 1 hectare. Two thousand fish are placed 

 in this pond twice a year, and about 1,500 are sold each time, 

 yielding about 300 pesos. The pond cost 400 pesos to construct. 



