Paperback, 22.3 x 15.5 cm, publisher’s tan wrappers, brown lettering to front and spine, imprint and price to back, pp.: [1-3] 4-136 [2] blank/advert.; collated 8vo: [1]-8⁸, 9⁴ χ¹, total 69 leaves plus 6 photomechanical plates, incl. frontispiece, four of them portraits. Title-page: И. Мечниковъ | ОСНОВАТЕЛИ | СОВРЕМЕННОЙ МЕДИЦИНЫ. | Пастеръ. — Листеръ. — Кохъ. | — | Изданiе | “НАУЧНАГО СЛОВА”. | Москва — 1915. Contributors and Characters: Илья Ильич Мечников [Élie Metchnikoff] (Russian, 1845 – 1916) – author. "Научное слово" – publisher. Типо-литография Товарищества И. Н. Кушнерев и Ко. — printer. Louis Pasteur (French, 1822 – 1895) – character. Joseph Lister (British, 1827 – 1912) – character. Robert Koch (German, 1843 – 1910) – character.