If a baby yawns, the sign of the cross should be made over it that the evil spirit may not enter.
Niagara Falls, Ont.

If a baby yawns, the sign of the cross should be made over it that the evil spirit may not enter.
Source: Current Superstitions (1896), entry 43.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.