Gax E. P. and Force J. N. — Preliminary note on a

skin reaction indicating protection against typhoid fever (Univ. of California, Public. of Pathol., 11 nov. 1913).

19. Gay E. P. and Force J. N. — A skin reaction indicative of immunity against typhoid fever (Arch. of Int. Med. Chicago, XII, 4914, p. 4H).

20. Taompson T. O. — Notes of a culaneous reaction for ‘the possible diagnoses of enterie group carriers enteric and dysenteric convalescent depot Wellington (Journ. of the Roy. Army Med. Corps, Londres, XXX VII, 1931, p. 302 311).

21. CHAuFFARD et TRoistER. — Reproduction expérimentale des taches rosées lenticulaires (C. R. Soc. Biol, LXVNI, 27 mars 1909, p. 519-520).

22. CHEURLOT E. — La tache rosée lenticulaire. Contribution à l'étude de la fièvre-typhoïde (Th. Paris, 1910).