508 



REPORT OF OFFICE OF EXPERIMENT STATIONS. 



tight with the exception of a single opening at the top, into which 

 grain may be poured or through which it may be removed. The 

 station tanks (see fig. 8) have been constructed with the openings 

 at the top quite circular and about 6 inches in diameter. Around 

 the opening two concentric circular collars have been soldered to the 

 top of the tank, the inner one (/>) having a width of about If inches, 

 and the outer {E) having a width of about 1^ inches. The diameter 

 of the inner collar is about 6 inches, while that of the outer one is 



Cross Sec//o/7 <?/? Z.//7e. /4-B. 



Fig. 8. — Grain-storage tank, Guam Experiment Station. 



approximately 8 inches, thus forming a recejotacle for holding the oil. 

 ^\Tien it is desired to close the tank, a cap (t'), with the flange (/^), 

 made to fit closely over the inner collar is placed in position and the 

 receptacle filled with coconut oil. The greater width of the inner 

 collar prevents all possibility of oil entering the tank. All that is 

 necessary in preparing corn for storing is to place it in the sun during 

 a hot, dry day until a well-dried condition of the grain is secured, 

 when it may be placed in the tank. Tanks thus sealed are proof 



