Les Gaz mortels is a 1916 silent French film directed by Abel Gance.
[1] The famous French chemist Hopson is on a study trip to Texas.
He is assisted by Mathus and supplied with snakes (the objects of his research) by Ted, a drunkard who torments Maud.
Maud ends up writing to Hopson, who takes her directly into his service just as World War One has broken out, leading them to return to France.
This article related to a French film of the 1910s is a stub.