The dogs caught the contagious enthusiasm, and barked joyously.
"My Attainment of the Pole"
Frederick A. Cook
Surely such a good-natured laugh was never heard before; and it was contagious, too, for the girl joined him in it, finally, though neither of them knew what they were laughing about.
"The Mystery of the Locks"
Edgar Watson Howe
Nothing is more contagious than joy, and Hyde was now a living joy through all the house.
"The Maid of Maiden Lane"
Amelia E. Barr