Malachite green (LMG) is used as a detection method for latent blood in forensic science. Hemoglobin catalyzes the reaction between LMG and hydrogen peroxide, converting the colorless LMG into malachite green. Therefore, the appearance of a green color indicates the presence of blood. In 1992, Canadian authorities determined that eating fish contaminated with malachite green posed a significant health risk. Malachite green was classified a Class II Health Hazard. Due to its low manufacturing cost, malachite green is still used in certain countries with less restrictive laws for non aquaculture purposes. In 2005, analysts in Hong Kong found traces of malachite green
The Malachite Box showed that he used vague folkloric beliefs and molded then into an original mythology. When asked whether his early stories were closer to folklore sources, Bazhov agreed. As time went by, he became less depended on the folklore and more independent as a writer. The current consensus among the folklore specialists is that he used the fragments of legends and bound them together by his own creative imagination. The first edition of "The Malachite Box" was released on 28 January 1939. It consisted of an introduction titled "The Watchhouse on Dumna Mountain" and 14 stories, based on the oral lore