vi 
CONTENTS. 
ORDER XIV. Ores of arsenic 
XV. .... cobalt 
XVI. . . . . manganese 
XVII. . . . . tungsten 
XVIII. . . . . molybdenum 
XIX. . .. . uranium 
XX. . . . . titanium 
XXI. . . . . chromum 
CHAP. III. Method of analysing minerals 
SEcr. I. Analysis of earths and stones 
II. Analysis of combustibles 
III. Analysis of ores 
IV. Method of obtaining pure metals 
BoOK IV. Or 
VEGETABLES 
CHAP. I. Of the ingredients of plants 
SEcr. I. Of sugar 
II. Of gum 
III. Of jelly 
IV. Of starch 
V. Of albumen 
VI. Of extract 
VII. Of tan 
VIII. Of acids 
IX. Of alkalies 
X. Of oils 
XI. Of wax and tallow 
XII. Of resins 
XIII. Of camphor 
XIV. Of gluten 
XV. Of caoutchouc 
XVI. Of wood 
XVII. Of suber 
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