31. The device, Merritt said, can detect the faint hissing sound produced by a leak of water under pressure. 32. It made these threatening hissing sounds , and she thought it was going to blow up at any minute ." 33. A faint hissing sound can also be heard for species of " Peziza " and other cup fungi. 34. When threatened the owl retreats to the burrow and produces rattling and hissing sounds similar to that of a rattlesnake. 35. Soon, people noticed a green tint to his skin and often heard a hissing sound coming from his bosom. 36. Dehiscence is accompanied by a hissing sound , an auditory phenomenon known to occur in about fifteen other fungal species. 37. :Yes, a hissing sound is associated with reduced pressure packing but inert gases can be used in combination. 38. :Note that the hissing sound during opening doesn't necessarily mean it was stored under reduced pressure intentionally. 39. A great hissing sound rushed in, then a feeling of droplets, and finally a high-octane chemical smell. 40. The soldiers heard a hissing sound and leaped to their feet screaming, before the explosion chased and knocked them down.