Whittock, Nathaniel: The Oxford Drawing Book, Or The Art Of Drawing, And The Theory And Practice Of Perspective: In A Series Of Letters Containing Progressive Information On Sketching, Drawing, And Colouring Landscape Scenery, Animals, And The Human Figure: With A New Method Of Practical Perspective: Detailed In A Novel, Easy, And Perspicuous Style, For The Use Of Teachers, Or For Self-Instruction. Embellished With Upwards Of One Hundred And Fifty Lithographic Drawings, From Real Views, Taken Expressly For This Work (Oxford , London, 1825)

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quired in ages past, still attached to it, have passed many illustrious characters to
bow their neck beneath the bloody axe of the executioner. Under the small grated
window, at the side of the gate, the bones of the young princes, the sonsxrf Edward
the Fourth, were found; having been interred here by the murderers who were em-
ployed by their unnatural uncle, Richard the Third. You will find little difficulty
in this drawing; the depth of shade required under the gateway, may be obtained by re-
crossing the first and second shades with a soft pencil.
... - A
Having had time to practise Plate XX. we will now return to trees.
No. 1. Plate XXIII. is part of a poplar supposed to be very near the foreground of
a picture. The outline of this tree is formed by the small semicircular touches, and
shaded with short touches like the second shade. No. 2. is a poplar seen at some dis-
tance : it preserves the same character in the outline, but is filled up more in mass, as
at a distance; the foliage of a tree never appears distinct. No. 3, is part of a droop-
ing willow, one of the most beautiful and picturesque trees in nature. To produce
this, it will be necessary to make a number of lines, like those used in the first shade,
and terminate them by a tremulous motion of the hand.