Using the vowel with no other markings.
In the excerpt the possible evidences would be:
1. <span>Some wounded thing, by the evidence a large animal, had thrashed about in the underbrush;
the jungle weeds were crushed down and the moss was lacerated; one patch of weeds was stained crimson
2. A small, glittering object not far away caught Rainsford's eye and he picked it up. It was an empty cartridge.</span>
I believe the radio broadcast strikes more fear for me. You can hear the tones of people's voices, and you can hear the people screaming. Although it is not as descriptive as the text I find it very scary!
Are you in Mosaic?