FISH-CULTURAL PRACTICES IN THE BUREAU OF FISHERIES. 



751 



covering of moss. The tray frames are seven-eighths inch wide, and usually 

 three-sixteenths inch to five-sixteenths inch thick, with a bottom either scrim 



Fig. 12. — German-Chile shipping case. Longitudinal section. 



or canton flannel. Instead of being made into one package for each chamber, 

 the trays are bound together in fives, with strong twine for binding material, 

 and alternating with each package are double-depth trays, or dummies, filled 



Fig. 13.- 



jerman-Chile shipping case. Plan. 



with wet moss. One of these moss-filled trays is placed also in the bottom of 

 each of the two tray chambers. 



