XXXV111

Of Artificial Colours. Of Black. Chap. X.

Of Blue, and of Burnt Yellow. Chap. XI.

Of White Lead, Verdigrease, and Red Lead. Chap. XII.

Of Purple. Chap. XIII.

Of Factitious Colours. Chap. XIV.

BOOK THE EIGHTH.

Introduction. (Page 227-)

Of the Method of Finding Water. Chap. I.

Of Rain Water. Chap. II.

Of the Nature of various Waters. Chap. III.

Of the Qualities of Waters in certain Places. Chap. IV.

Of the Means of Judging of Water. Chap. V.

Of Levelling, and the Instruments used for that Purpose. Chap.VI.

Of conducting Water. Chap. VII.

BOOK THE NINTH.

Introduction. (Page 259.)

Of the Method of Doubling the Area of a Square. Chap. I.

Of the Method of constructing a Right Angled Triangle. Chap. II.Of the Method of detecting Silver when mixed with Gold. Chap.III.

Of the Universe and the Planets. Chap. IV.

Of the Sun’s Course through the Twelve Signs. Chap. V.

Of the Northern Constellations. Chap. VI.

Of the Southern Constellations. Chap. VII.

Of the Construction of Dials by the Analemma. Chap. VIII.

Of Various Dials, and their Inventors. Chap. IX.

BOOK THE TENTH.

Introduction. (Page 293.)

Of Machines and Engines. Chap. I.