Herbal Simples Approved for Modern Uses of Cure

Excerpt

“And now lapis had appeared,
Blest leech! to Phoebus’-self endeared
Beyond all men below;
On whom the fond, indulgent God
His augury had fain bestowed,
His lyre-his sounding bow! 
But he, the further to prolong
A fellow creature’s span,
The humbler art of Medicine chose,
The knowledge of each plant that grows,
Plying a craft not known to song,
An unambitious man!”