The Progress of Invention in the Nineteenth Century.

by Edward W. Byrn

FIG. 178.

TUBE CONTAINING CULTURE OF BACILLI OF TUBERCULOSIS.

TUBE CONTAINING CULTURE OF COMMA BACILLI OF CHOLERA.

TUBE CONTAINING CULTURE OF BACILLI OF TUBERCULOSIS.

TUBE CONTAINING CULTURE OF COMMA BACILLI OF CHOLERA.

FIG. 178.