INDIA-RUBBER AND GUTTA-PERCHA. Translated from the French of T. Seeligmann, G. Lamy Torvilhon and H. Falconnet by John Geddes McIntosh. Royal 8vo.

[Out of print. Second Edition in preparation.]

Contents.

India-Rubber -- Botanical Origin -- Climatology -- Soil -- Rational Culture and Acclimation of the Different Species of India-Rubber Plants -- Methods of Obtaining the Latex -- Methods of Preparing Raw or Crude India-Rubber -- Classification of the Commercial Species of Raw Rubber -- Physical and Chemical Properties of the Latex and of India-Rubber -- Mechanical Transformation of Natural Caoutchouc into Washed or Normal Caoutchouc (Purification) and Normal Rubber into Masticated Rubber -- Softening, Cutting, Washing, Drying -- Preliminary Observations -- Vulcanisation of Normal Rubber -- Chemical and Physical Properties of Vulcanised Rubber -- General Considerations -- Hardened Rubber or Ebonite -- Considerations on Mineralisation and other Mixtures -- Coloration and Dyeing -- Analysis of Natural or Normal Rubber and Vulcanised Rubber -- Rubber Substitutes -- Imitation Rubber.

Gutta Percha -- Botanical Origin -- Climatology -- Soil -- Rational Culture -- Methods of Collection -- Classification of the Different Species of Commercial Gutta Percha -- Physical and Chemical Properties -- Mechanical Transformation -- Methods of Analysing -- Gutta Percha Substitutes -- Index.