“I…think there are two different metals being burned. One’s coming from Kelsier down below; the other is coming from you.”

“Good,” Marsh said appreciatively. “You’ve practiced.”

“Not much,” Vin admitted.

He cocked an eyebrow. “Not much? You can already determine pulse origins. That takes practice.”

Vin shrugged. “It seems natural to me.”

Marsh was still for a moment. “Very well,” he eventually said. “Are the two pulses different?”

Vin concentrated, frowning.

“Close your eyes,” Marsh said. “Remove other distractions. Focus only on the Allomantic pulses.”

Vin did so. It wasn’t like hearing—not really. She had to concentrate to distinguish anything specific about the pulses. One felt…like it was beating against her. The other, in a strange sensation, felt like it was actually pulling her toward it with each beat.

“One’s a Pulling metal, isn’t it?” Vin asked, opening her eyes. “That one’s Kelsier. You’re Pushing.”

“Very good,” Marsh said. “He is burning iron, as I asked him to so that you could practice. I—of course—am burning bronze.”