Etude du fonctionnement moteur de l'estomac a l'aide des rayons de Rontgen. Inscribed offprint + 3 others

1898. Roux, Jean Ch. and Balthazard, Victor (1872-1950). (1) Etude de fonctionnement moteur de l'estomac a l'aide des rayons de Rontgen. Offprint from Arch. de physiologie normale et pathologique 1 (1898). 85-94pp. Plate (x-ray photographs). 243 x 159 mm. Original printed wrappers, paper label tipped to front wrapper, light soiling & wear. Roux's inscription on the first page: "Hommage de l'auteur, J. Ch. Roux." (2) Sur l'emploi des rayons de Rontgen pour l'Ètude de la motricite stomacale. Offprint from C. r. Societe de biologie (1897). 3pp. Bound with (3) Note sur les functions motrices de l'estomac du chien. Offprint from C. r. Societe de biologie (1897). 3pp. Bound with (4) ...tude des contractions de l'estomac chez l'homme a l'aide des rayons de Roentgen. Offprint from C. r. Societe de biologie (1897). Nos. (2) - (4) bound together in original wrappers, front wrapper detached, back wrapper lacking, light chipping. Plate in no. (1) a bit foxed, nos. (2) - (4) browned. First Editions, offprint issues. Balthazard and Roux worked with bismuth in their x-ray research in gastroenterology at about the same time as Walter Cannon, who began in late 1896 and is credited with introducing the "bismuth meal." However, Balthazard and Roux published their researches in 1897, while Cannon did not publish until 1898. Blathazard used Marey's new motion photography methods in his work; see the plate to no. (1). 39385.