PASTEUR LOUIS (1822-1895). Autograph note, [Paris] September 4, 1886. 1 p. in-12 oblong. Correspondence card to his address "45, rue d'Ulm". This note is about a program of experiments on tuberculosis. "on returning to Paris: inoculate rabbits and guinea pigs with pulmonary phthisis. Then every day inoculate half of them s.l.p. (under the skin) with healthy marrow from rabbits - the others nothing - what effect? (...) tests with marrow of various kinds; pig, calf (...) test with marrow of animals refractory to phthisis (...) dog. What happens to guinea pigs, to rabbits by inoculation of marrow in exaggerated quantity? massive? (...)". This is a very precious note, in fact, in all of Pasteur's printed work, it is only in a few short passages of his work on silkworm diseases that he deals with pulmonary phthisis and only by comparing it to silkworm diseases.