As a special print from Věstník král. české společnosti nauk v Praze (the Bulletin of the Royal Czech Society of Sciences in Prague) was published a separate publication with ten illustrations sponsored by the Royal Czech Society of Sciences, from a docent of the Czech University Dr. Vladimír Novák, Elektrické měření účinku světla na desku fotografickou (Electrical Measuring of Light Effects on a Photographical Plate).