The Old Maid's Baby (1919)

Christine, known as Tiny, whose mother eloped with a circus clown and became a parachutist, spends most of her time with her lame dog and an elephant. When the circus passes through her home town, Tiny's mother is rejected by her sister Sylvia, thought to be an old maid because of her all-consuming interest in mathematics. Seeing her mother depressed, Tiny convinces her father to join her for her nightly stunt of parachuting from a balloon. While Tiny plays with a precocious black child, her parents' chute fails to open and they die. Thinking herself friendless, Tiny attempts to drown herself, but her dog brings Sylvia and Frank Dodge, who loves her. Sylvia lets her other suitor, Professor Caldwell, who wants her fortune, direct Tiny's upbringing "scientifically," but after Tiny and Frank expose the professor's plot to destroy Sylvia's book on the fourth dimension, because it is better than his own book, Sylvia, who now loves Tiny, accepts Frank's proposal.