Bordeaux mixture test at Agricultural Department

Testing milk

Test tubes of water (taken to show deposits)

Cream testing room. Grafton Butter Factory

Test tubes of water (taken to show deposits)

Milk testing

Test tubes of water (taken to show deposits)

Test tubes of water (taken to show deposits)

Test tubes of water (taken to show deposits)

Testing milk

Womens Training Farm, Cowra, test tubes

Test tubes of water (taken to show deposits)

Test tubes of water (taken to show deposits)

Fort Street High School. Chemistry

University of Technology (Sydney Technical College)

Testing milk

University of Technology (Sydney Technical College)

Test tubes of water (taken to show deposits)

Test tubes of water (taken to show deposits)