Plate XI depicting various forms of uric acid crystals and deposits. The figures are identified as follows:

Figure 1: Uric Acid Crystals (comb forms). Spontaneously precipitated.

Figure 2: Uric Acid. Colourless, highly-refractive, four-, five-, and six-sided plates, also oval and rounded forms.

Figure 3: Uric Acid. Spear-shaped and lanceolate forms.

Figure 4: Urate Deposit of rose-pink colour, above it there is a moderately thick layer of uric acid crystals (subsequently deposited).

Figure 5: Cholesterin. (Successively treated with iodine and concentrated sulphuric acid) in the form of large and small crystalline plates, presenting a variety of colours.

Figure 6: Urinary Indigo. In the form of flakes and irregular particles, spontaneously precipitated on the occurrence of alkaline fermentation.