Whoever, except in case of invasion by a foreign enemy, or to suppress insurrection or a mob, or for the purpose of raising the body of a person drowned, or for the purpose of blasting or removing rock, fires any cannon, or explodes at any time more than four ounces of gunpowder, upon any public street or highway, or nearer than ten rods to the same, shall be fined not more than fifty nor less than five dollars.