Paraffin is used for general embedding and infiltrating.
Lugol’s Solution is used as a test for starch and for aleurone grains and proteid matters.
Osmic Acid. A two per cent solution is used as a test for fixed oils.
Alcohol, Glycerine, and Water Mixture is used as a temporary mounting medium and as a qualitative test for fixed oils.
Chlorzinc Iodide is used as a test for suberin, lignin, cellulose, and starch.
Analine Chloride is used as a test for lignified cell walls of bast fibres and of stone cells.
Phloroglucin. A one per cent alcoholic solution is used in connection with hydrochloric acid as a test for lignin.
Hæmatoxylin-Delifields is used as a test for cellulose.
Fig. 38.—Reagent Set