Apparatus used in Chemistry, Pharmacy, and Tanning.

Class 51.—Laboratory utensils and apparatus.

Apparatus and instruments used in assays for industrial and commercial purposes.

Processes and apparatus used in the manufacture of chemicals, soaps, and candles.

Processes and apparatus used in the manufacture of essences, varnishes, and articles made of india-rubber and gutta-percha.

Processes and apparatus used in gasworks.

Processes and apparatus used in bleaching.

Processes used in the preparation of pharmaceutical products.

Processes used in tanyards, and in leather dressing.

Processes and apparatus used in glassworks, and in china and earthenware manufactories.