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Procedimiento para indicar la presencia en las minas, del gas hidrógeno carburado llamado brison, en volumen irregular o peligroso, con los aparatos descritos.
Unos nuevos aparatos para alumbrar por gas los vagones de ferro-carriles, consistiendo en el empleo de un solo resorte de espiral, permitiendo regular la presión del gas en un solo tornillo.