Works
In various periodicals more than thirty papers have been published by him, the most important being the following: • "Olonetzkaya Diabazovaya Formatziya" (in "Trudy St. Peterburgskavo Obschestva Yestestvovyedeniya," xix.); • "O Fosforitnom Chernozyome" (in "Trudy Volnoekonomicheskavo Obschestva," 1890); • "O Nyekotorykh Khimicheskikh Tipakh Izvyerzhonykh Porod" (in "Vyestnik Yestestvoznaniya," 1890); • "Geologicheskiya Izslyedovaniya v Guberlinskhikh Gorakh" (in "Zapiski Mineralnavo Obschestva"); • "Die Variolite von Yalguba" ("Tscherm. Mineral. Mitt." vi.); • "Die Mikroskopische Beschaffenheit des Jordanalit" (ib. ix.); • "Etudes sur le Porphirite de Deweboyu" (in "Bulletin de Société Belge de Géologie"); • "1 et 2 Notes sur la structure des roches éruptives" (ib.); • "Note sur les taxites et les roches élastiques volcaniques" (ib.); • "Les Ammonée de la Zone à Sporadoceras Munsteri" (ib.); • "Petrographisches Lexicon" (2 parts, 1893–95); • "Tablitzy dlya Mikroskopicheskikh Opredeleni Porodoobraznykh Mineralov." :: The last was published in English by Gregory. == Bibliography ==