vintage flea medication ad

From the back pages of The Dog; With Simple Directions for his Treatment . . .
by "Idstone" (Thomas Pearce), 1872.
The "Important Testimonials" read as follows:
"I believe Naldire's Tablet to be perfectly harmless to the dog, but fatal to the fleas."
"I do not think anyone possessing a dog of value should be without Naldire's Tablet."