"It depends upon diet.

Carnivores and birds of prey can take lethodyne with impunity; herbivores and fruit-eaters cannot recover, and die of it.

Man, therefore, being partly carnivorous, will doubtless be able more or less to stand it." Hilda Wade smiled her sphinx-like smile.

"Not quite that, I fancy," she answered.

"It will kill cats, I feel sure; at least, most domesticated ones.