Palmer would have liked to offer his expertise as well as his apparatus, but the latter was expensive enough, especially given the quantities of the gas continuous use would require.

Knowing that fire and oxygen mix all too well, I asked Mary to have bricks heated in the oven. We'd wrap them in flannel and set them around Holmes to keep him warm once the temperatures dropped at nightfall.

"And what shall you do for light?" she asked.

I blinked at her, unable to grasp the question for far too long.

"Never mind, dear," she said. "I'll think of something."