Hence, the actual treatment of the prey (i.e. picking it from the sediment, the suction of meat from bivalves or spitting out of emptied valves) could not be seen.
Visible on the inside of most empty bivalve valves is a shiny curved line that runs more or less parallel to the outer margin of the shell and often connects the two adductor muscle scars (if the animal had two adductor muscles).
Brass players should empty their spit valves and make sure that everything is still moving smoothly, perhaps oiling a bit more, if necessary.
While we emptied our spit valves and clipped the music for our finale, "The Star-Spangled Banner," to our stands, Mr. Lee, who as band president also gets to be the master of ceremonies, told our audience of friends, family and tourists (some nodding off in their lawn chairs) to look up.
If you have a few minutes while the director is talking to another section, take the time to lean back in your chair, mark your music, change your reed, empty your spit valve, or anything else you may have to do.
When emptying the spit valve of your third valve slide, hold down your third valve while blowing air through your trumpet.
In use, water is drawn off from the high level valve and when the tank is almost empty the low level valve is opened to flush out any settled material.
Brass players should remember to empty out their spit valves often.
As U.S. Marines readied an amphibious landing at Kuwait's Sea Island terminal during the first Gulf War in 1991, Iraqi forces opened valves and emptied whole tankers, spilling 10.3 million barrels of oil into the Persian Gulf, three times the amount released in the Ixtoc spill.
