CONTENTS. 



Page. 



action 7 



ific-gravity determinations 7 



Temperature corrections 7 



Westphal balance 8 



Vacuum weighing 8 



Choice of pyknometers 9 



Calibration of pyknometers 10 



Hydrometers 10 



Arbitrary scales 10 



Paint materials 11 



Linseed oil 11 



Spirits of turpentine 13 



Benzin and light petroleum oils 15 



Dry shellac 16 



Shellac in alcohol . * 17 



Damar varnish 17 



Oil varnish 18 



Japan drier 19 



Paints 20 



Strength test 20 



White pigments 20 



White lead 20 



Lead zinc whites 22 



Calcium pigments 24 



Barytes 25 



Lithopone 26 



General scheme of analysis for a white pigment 27 



Black pigments 28 



Manufactured blacks 28 



Graphite 29 



Colored pigments 29 



Yellow, orange, and red pigments 29 



Chrome yellow 29 



Zinc yellow 31 



Red lead and orange mineral 31 



Vermilion 32 



Oxid and earth pigments 33 



Blue pigments 34 



Prussian blue 35 



Ultramarine 36 



Green pigments 37 



Chrome green 37 



Ultramarine and zinc yellow green 38 



Mixed paints 39 



5 



