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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The paper being properly strained, and having provided yourself with a cake of
Indian ink and a set of brushes, or camel-hair pencils of different sizes, a white plate
and a cup of cold soft water, you may commence the tinted drawing of Marston Cross,
Plate XCV. Damp your paper with the largest brush full of water; then dip one of
your brushes in water, and let a few drops from it fall upon one side of the plate : here
you must rub up your Indian ink, taking care not to have it too wet. Having so done,
take a large brush and dip it into the Indian ink, and on another part of the plate
mix it with water till it becomes sufficiently pale to form the tint No. 1. ; then with
the same brush, beginning in the left hand corner at the top of the drawing, put the
whole in this shade with the exception of the strong light on the broken angles of
the cross. You will at first find it difficult to form a broad flat tint, as you will be
fearful of using too much colour; but you must always keep the brush full of colour,
and never try to make what you have in the brush go over too large a space, but
keep the brush quite full, even if you are nearly at the end of the space you
wish to cover, otherwise the edge of the tint will dry before you get more in your
brush, and the sky will be spoiled with lines running across it: this being a small
drawing, will not require the use of the flat sky-brush, No. 6. Plate XCII. Having
laid on the first tint, yon must mix the tint No. 2. on the plate, trying if it is dark
enough on the waste paper on your drawing board; with this tint form the trees, the