Viktorin Vojtěch (1879-1948) printed a study in Chemické listy pro vědu a průmysl (Chemical papers for science and industry), which is the first Czech contribution to the latent picture theory. (It was linked to an essay, printed in the same paper in 1914, and a study O latentním obraze normálním i solarizovaném v různých prostředích (About the latent picture normal and solarised in various environments), printed in Rozpravy české akademie (Czech Academy Discussions) in 1913.)