Acidity, determination of, 39.
Acids, mineral, 41.
Agar, nutrient, 94, 96.
lactose-litmus, 97.
Alkali carbonates, 39.
Alkalinity, determination of, 35.
Albuminoid nitrogen, 20.
Aluminium sulfate, determination of, 41.
analysis of, 78.
Aluminium and iron, determination of, 57.
Ammonia nitrogen, determination of, 15.
Apparatus, bacteriological, 93.
Application of colon group tests, 102.
Arsenic, determination of, 63.
Azolitmin solution, 96.