The properties and effects of the genuine poudre unique, [electronic resource] : demonstrated and established, in above two hundred cures of the king's evil, the scurvy, &c. &c.; all of them of the most Inveterate Nature, and many of them deemed Incurable. As also, a brief detail of the manner in which it was introduced into England, and of the base attempts that have been made to impose adulterated compositions in the Room of it. To which are Added, Such Plain and Easy Directions for taking the Poudre Unique, that any Person, in the Disorders for which it is an approved Specific, may be his Own Physician. By the Chev. de Mouchet de Godernaux, patentee and sole proprietor of the poudre unique.