Vermifuge is for treating worms. Bottle dates from about 1915 up to the 30s or 40s I would say. The box N mark was used by Obear-Nester Glass Co of Toledo, OH. This mark was used after 1915.
I suspect your bottle got disfigured while in a burning trash pile, not at time of manufacture.
One sees a number of popular medicines in the 19th c for treating worms so I guess this was an issue back when.
Chris