50° - The Philippine Journal of Science 1922 
attention of the Bureau of Science, and the use of sulphur has 
been found well suited to this field. 
The process of sulphuring copra has been described and its 
advantages have been pointed out by Brill, Parker, and Yates.? 
The purpose of the present paper is to record certain modifica- 
tions that have been found advisable during several years of suc- 
cessful commercial use of the process in the Philippines. 
THE SULPHURING BOX 
One form of sulphuring apparatus is shown in Plate 2 fie. tc 
A slightly different type is shown in Plate 1, fig. 2, and Plate 2, 
fig. 3. The details of construction of this apparatus, which was 
made by Mr. H. J. Detrick, at Polo Plantation, Dumaguete, 
are as follows: : 
The sulphuring box, inside measurements 120 centimeters (4 
feet) wide, 265 centimeters (8 feet, 10 inches) long, 210 centi- 
meters (7 feet) high, was constructed of tongue-and-groove lum- 
bayao, 2.5 centimeters (1 inch) thick. Hight uprights 5 by 10 
centimeters (2 by 4 inches) were employed. It was erected -in 
a shed with galvanized iron roof and dirt floor. 
One length, about 5 meters (17 feet), of 60-centimeter (24- 
inch) cane track, and two pairs of wheels, with rough boxings, 
were purchased from a sugar hacienda at Bais. A frame of 
5-by-10-centimeter (2-by-4-inch) and 5-by-15-centimeter (2-by- 
6-inch) pieces was fitted over the wheels. The track was laid 
in a ditch 20 centimeters (8 inches) deep. 
Sixteen trays, outside measurements 90 by 230 by 10 centi- 
meters (3 feet by 7 feet 8 inches by 4 inches), were constructed 
of malatabigi about 3 centimeters (14 inches) thick. The 
bottoms were made of bamboo strips about 6 centimeters (2.5 
inches) wide, leaving a maximum opening of 1.3 centimeters 
(0.5 inch). This floor rested at the ends and at three places 
between the ends on horizontally laid 5-centimeter (2-inch) 
strips. The whole was strengthened by nailing above the bam- 
boo directly over each of the crosspieces, except the central 
one, a strip of 6-by-3-centimeter (23-by-1}-inch) malatabigi. 
This construction produced strong ends made up of three pieces, 
one 10 centimeters (4 inches), one 6 centimeters (2.5 inches), 
and one 5 centimeters (2 inches). The 6-centimeter (2.5-inch) 
pieces were laid upright, like floor joists (see Plate 2, fig. 3). 
The capacity of this box was 3,000 nuts (without shells). 
* Brill, H. C., Parker, H. O., and Yates, H. S., Copra and coconut oil, 
Philip. Journ. Sci. § A 12 (1917) 80. 
