The Chemist's Mistake (1910)

Mrs. Jones' cough has been very troublesome, but money is very short and little Dolly is sent by her father to induce that kind old Mr. Burrows, the neighboring chemist, to let them have a bottle of soothing syrup mixture on trust. Off she goes and succeeds in getting the syrup: the bottle falls on the ground, is smashed and the whole of the contents spilled. Now after little Dolly's departure from the chemist's shop Mr. Burrows' assistant discovers that the wrong bottle has been given to the child and instead of the medicine it was a bottle of poison.