Badlands Billy 
right up to the carcass, an old-time Wolf might 
have done so, but constant war had developed 
constant vigilance in the Yellow Wolf, and 
trusting nothing and no one but her nose, she 
slacked her speed to a walk. On coming in 
easy view she stopped, and for long swung her 
nose, submitting the wind to the closest possi- 
ble chemical analysis. She tried it with her finest 
tests, blew all the membranes clean again and 
tried it once more; and this was the report of 
the trusty nostrils, yes, the unanimous report. 
First, rich and racy smell of Calf, seventy per 
cent.; smells of grass, bugs, wood, flowers, 
trees, sand, and other uninteresting negations, 
fifteen per cent.; smell of her Cub and herself, 
positive but ignorable, ten per cent.; smell of 
human tracks, two per cent.; smell of smoke, 
one per cent.; of sweaty leather smell, one per 
cent.; of human body-scent (not discernible in 
some samples), one-half per cent. ; smell of iron, 
a trace. 
The old Wolf crouched a little but sniffed 
hard with swinging nose; the young Wolf 
imitatively did the same. She backed off to a 
greater distance; the Cub stood. She gave a 
rear 
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