The second book of "Notes" is devoted to oncology. Based on the author's unique experience in treating cancer, sarcoma, leukemia, lymphogranulomatosis with plants, an unambiguous conclusion is made - cancer is insidious, but it can be cured. For this, according to the author, radical surgery is necessary for those to whom it is indicated, combined chemotherapy or radiation therapy. At the same time, with such diseases, it is imperative to include herbal medicine in the treatment complex at all their stages, which must be taken seriously, from the standpoint of medical science - clinical phytology.