Note 14 — SECTION IV. An attempt to investigate the Source from which the respective Powers of Nerves, and of Muscles, are derived.

This solution, which is the same that I employed in all my subsequent experiments, was of the same strength with that used by Dr Alexander in the greater number of his, viz. an ounce of crude opium mixed in a mortar with two ounces and a half of water, and filtered through paper, after having remained twelve hours, in a close corked bottle, near a chamber fire.