a greenish shade, I
should have added Croceine Orange, which on the fabric would absorb just
those green and bluish rays of light necessary to radiate from and
illumine that greenish part, and the greenish part would do the like by
the orange rays; the effects would be neutralised, and all would fall
together into black.

THE END.

INDEX

Acetone, 64

Acid, boric. _See_ Boric acid.
" carbolic. _See_ Phenol.
" colours, mordanting, 74
" hydrochloric. _See_ Hydrochloric acid.
" nitric. _See_ Nitric acid.
" sulphuric. _See_ Sulphuric acid.

Acids, distinguishing, from alkalis, 23, 49
" neutralisation of, 50
" properties of, 49
" specific gravities of, 49

Affinity, chemical, 71

Alizarin, 75, 76, 80, 83, 91, 99
" blue, 90
" paste, 91
" pure, 91
" purple, 77
" red, 77

Alkali, manufacture of, by ammonia-soda process, 55
" manufacture of, by electrolytic process, 56
" manufacture of, by Leblanc process, 53

Alkalis, distinguishing, from acids, 23, 49
" neutralisation of, 50
" properties of, 49
" specific gravities of, 49

Alum, cake, 73

Aluminium sulphate, 73

Ammonia, 23, 95

Ammonia-soda process, 55

Aniline, 91
" black, 81
" constitution of, 96
" preparation of, 96
" reaction of 97
" violet 77, 81

Animal fibres. _See_ Fibres.

Annatto, 83, 85, 87

Anthracene, 90

Archil. _See_ Orchil.

Aurin, 91, 98

Azo dyestuffs, 98

Barwood, 99

Basic colours or dyestuffs, mordanting, 76

Bast fibres. _See_ Fibres.

Bastose, 4

Bastose, distinction between, and cellulose, 4

Beaume hydrometer degrees, 31

Benzene, 90, 96

Bixin, 88

Black-ash process, 54

Blue colour, absorption spectrum of pure, 114

Boilers, incrustations in, 42

Boiling-point, effect of pressure on, 32
" of water, effect of dissolved salts on, 36
" of water, effect of increase of pressure on, 35

Borax, 59
" tests of purity of, 59

Boric acid, 57

Boronitrocalcite, 59

Brasilin, 99

Brazil wood, 99

Camwood, 99

Carbolic acid. _See_ Phenol.

Carminic acid, 76

Carre ice-making machine, 32

Carrotting. _See_ Secretage.

Carthamic acid, 87

Carthamin, 87

Cellulose, action of cupric-ammonium solutions on, 5
" composition of, 3
" distinction between, and bastose, 4
" proper