Plot

The professor does not approve of his daughter's suitor. His disapproval is so marked that it is finally noticed by said swain, Tim Brown, when he is kicked out of the house by the father of his lady love, and he resolves to be careful in the future and not be subjected to further indignities. The Professor has been experimenting with germs, and discovers some new and deadly ones which he exhibits to some of his medical friends. The germs have been raised in a culture of milk, and when the professor escorts his guests to the door the milk bottle and the cup are left on the table. Unfortunately, Tim Brown seized this particular moment to make a call on his lady love, accompanied by his dog, making his entrance through an open window. The dog is thirsty, so he innocently pours more milk into the cup and gives it to the animal. The professor, returning, sees what is taking place, and crying, "The dog is full of deadly germs," runs away. The dog, attracted by the queerly acting, screaming man, runs after him, and soon there is tremendous excitement, half the town running with the Professor, and the others running after him and the dog. After many narrow escapes from the deadly teeth of the dog, the professor finally reaches a place of safety.—Moving Picture World synopsis