.--LXIX., The Preparation of
Pigments for Painting.--LXX., The Examination of Pigments.--LXXI.,
Examination of Lakes.--LXXII., The Testing of Dye-Woods.--LXXIII., The
Design of a Colour Works.--LXXIV.--Commercial Names of
Pigments.--Appendix: Conversion of Metric to English Weights and
Measures.--Centigrade and Fahrenheit Thermometer Scales.--Index.

* * * * *

=BONE PRODUCTS AND MANURES=: An Account of the most recent Improvements
in the Manufacture of Fat, Glue, Animal Charcoal, Size, Gelatine and
Manures. By THOMAS LAMBERT, Technical and Consulting Chemist.
Illustrated by Twenty-one Plans and Diagrams. 162 pp., demy 8vo. 1901.
Price 7s. 6d.; India and Colonies, 8s.; Other Countries, 8s. 6d.;
strictly net.

=Contents.=

Chapters I., Chemical Composition of Bones--Arrangement of
Factory--Crushing of Bones --Treatment with Benzene--Benzene in Crude
Fat--Analyses of Clarified Fats--Mechanical Cleansing of Bones--Animal
Charcoal--Tar and Ammoniacal Liquor, Char and Gases, from good quality
Bones--Method of Retorting the Bones--Analyses of Chars--"Spent"
Chars--Cooling of Tar and Ammoniacal Vapours--Value of Nitrogen for
Cyanide of Potash--Bone Oil--Marrow Bones--Composition of Marrow
Fat--Premier Juice--Buttons.--II., Properties of Glue--Glutin and
Chondrin--Skin Glue--Liming of Skins--Washing--Boiling of
Skins--Clarification of Glue Liquors--Acid Steeping of Bones--Water
System of Boiling Bones--Steam Method of Treating Bones--Nitrogen in the
Treated Bones--Glue-Boiling and Clarifying-House--Plan showing
Arrangement of Clarifying Vats--Plan showing Position of
Evaporators--Description of Evaporators--Sulphurous Acid
Generator--Clarification of Liquors--Section of
Drying-House--Specification of a Glue--Size--Uses and Preparation and
Composition of Size--Concentrated Size.--III., Properties of
Gelatine--Preparation of Skin Gelatine
--Washing--Bleaching--Boiling--Clarification--Evaporation--Drying--Bone
Gelatine--Selecting
Bones--Crushing--Dissolving--Bleaching--Boiling--Properties of Glutin
and Chondrin --Testing of Glues and Gelatines.--IV., The Uses of Glue,
Gelatine and Size in Various Trades--Soluble and Liquid Glues--Steam and
Waterproof Glues.--V., Manures--Importation of Food
Stuffs--Soils--Germination--Plant Life.--VI., Natural Manures--Water and
Nitrogen in Farmyard Manure--Full Analysis of Farmyard Manure--Action on
Crops--Water-Closet.

System--Sewage Manure--Green Manures