[1] "Lectures on Art, 1870," § 23.

[2] National Gallery, No. 812.

[3] Make a note of these points:

1. Date, time of day, temperature, direction and force of wind.

2. Roughly, by compass, the direction in which you are looking; and angle of the light with respect to it.

3. Angle subtended by picture, and distance of nearest object in it.

[4] From a "Picturesque Tour from Geneva to Milan" ... engraved from designs by J. Lory of NeufchÂtel. London: Published by R. Ackermann, at his Repository of Arts, 1820.

[5] "Lectures on Art, 1870," § 130.

[6] At the Ruskin Drawing School, Oxford.

[7] "Lectures on Art, 1870," § 170.

[8] "Othello," I. 2.

[9] "Lectures on Art" (the Inaugural Course, 1870), § 138.

[10] Now in the National Gallery, No. 1034.

[11] "Lectures on Art, 1870," § 185.

[12] No. 812. "Landscape, with the Death of St. Peter Martyr."

[13] Ovid, "Metamorphoses," XI. 769.

[14] (Of the Purist school.)

[15] Pyth. viii. 95. (135.)