plate no. 8185

Cornet Sir George Cooke

oil, canvasRococoportraitportraitfiguremilitary uniformhatskyclouds

recreation guide

Joseph Wright of Derby’s *Cornet Sir George Cooke* (1768) is a portrait that exemplifies the artist’s transition from the Rococo style toward the dramatic lighting effects for which he is best known. Wright is historically noted for his use of tenebrism, an exaggerated form of chiaroscuro that emphasizes the stark contrast between light and dark, a technique he famously applied to candlelit subjects and scientific scenes (Source 6). While this specific portrait may not feature the theatrical lighting of his later works like *An Experiment on a Bird in the Air Pump*, it likely retains the strong tonal gradations and dramatic presence characteristic of his portraiture during this period (Source 3). The work reflects the Enlightenment spirit, capturing the sitter with a seriousness that avoids the excessive rhetoric of earlier Baroque styles, aligning with the sober dignity often found in 18th-century British portraiture.

estimated time

20-30 hours over 5-7 sessions

materials

4 items

steps

6 in sequence

materials

item	purpose	modern equivalent
Oil paints (Ultramarine, White, Black, Red Ochre, Yellow Ochre)	Primary pigments for the grisaille underpainting and subsequent glazing.	Modern tube oils; historically, ultramarine was expensive lapis lazuli, while whites were lead-based.
Oil of Copavia (or modern stand oil/linseed oil)	Medium for the first and second paintings, as recommended by Sir Joshua Reynolds for this era’s technique.	Stand oil or a mix of linseed oil and damar varnish for glazing.
Canvas	Support for the oil painting.	Linen or cotton canvas, primed with gesso.
Charcoal or Red Chalk	For the initial underdrawing, aiming for 'artistic accuracy' rather than mere scientific precision.	Vine charcoal or sanguine chalk.

preparation

surface prep

Prepare a standard oil-primed canvas. While specific ground preparation for this exact portrait is not detailed in the sources, Wright’s practice as an oil painter implies a stable, absorbent ground to support the layering of glazes. The surface should be smooth enough to allow for the fine finish expected in portraiture, but not so glossy as to prevent the adhesion of the initial underpainting.

underdrawing

Create a detailed underdrawing that captures the 'emotional significance' of the sitter rather than just scientific accuracy (Source 5). The drawing should be highly finished to establish the habit of minute visual expression, ensuring that the form is vivid and the smaller subtleties are instinctive before applying paint. This prevents the artist from being 'too much tied down to their outline' during the painting phase (Source 4).

underpainting

Execute a monochrome underpainting (grisaille) using black, ultramarine, and white, mixed with oil of copavia (Source 1). This step involves mentally extracting red and yellow tones to establish the value structure. The goal is to create a dry, stable foundation that defines the chiaroscuro—the gradation of light and dark—which is central to Wright’s style (Source 6). This underpainting should be allowed to dry completely before proceeding.

color palette

Ultramarine

Pure ultramarine pigment

Used in the initial grisaille underpainting along with black and white to establish tones (Source 1).

White

Lead white (historical) or Titanium/Zinc white (modern)

Highlighting and mixing in the grisaille underpainting (Source 1).

Black

Ivory black or Lamp black

Shadows and depth in the grisaille underpainting (Source 1).

Red and Yellow Tones

Vermilion, Red Ochre, Yellow Ochre, or Chrome Yellow

Applied as transparent glazes and semi-opaque scumbles over the dry grisaille to introduce color, particularly in flesh tones and clothing (Source 1).

composition

While specific compositional details of *Cornet Sir George Cooke* are not described in the sources, Wright’s portraits generally avoid the 'swagger and excessive rhetoric' of aristocratic Baroque portraiture (Source 8). The composition likely emphasizes a sober, undemonstrative pose, focusing on the character of the sitter. The use of chiaroscuro will likely create a 'true gradation of light' where the highest tones are enfeebled near the shadows and the lowest tones are heightened near the light, creating a spontaneous contrast (Source 2).

step by step

underdrawing→underpainting→first pass→refining→finishing→varnishing

underdrawing

step 01
Draw the sitter with high finish and attention to emotional significance, ensuring the form is vivid and accurate to the artist's intent.
Tip — Avoid mere scientific accuracy; focus on the sensations produced by the subject (Source 5).
Artistic Accuracy

underpainting

step 02
Paint a monochrome grisaille using black, ultramarine, and white mixed with oil of copavia. Establish the full range of values from light to dark.
Tip — Mentally extract red and yellow colors, focusing only on the underlying structure and light/dark relationships (Source 1).
Grisaille

first pass

step 03
Allow the grisaille to dry completely. Then, begin glazing with transparent coats of red and yellow tones using oil as a medium.
Tip — Apply color much like tinting an engraving with watercolors, building up transparency (Source 1).
Glazing

refining

step 04
Use scumbling (semi-opaque painting) to adjust tones, particularly over darker grounds to create coldness or grey blooms if needed.
Tip — Ensure the underlying painting makes itself felt through the semi-opaque layer (Source 1).
Scumbling

finishing

step 05
Refine the chiaroscuro effects, ensuring that the juxtaposition of tones creates a true gradation of light, with highlights and shadows interacting dynamically.
Tip — Watch for the spontaneous production of details due to contrast of tone (Source 2).
Chiaroscuro/Tenebrism

varnishing

step 06
Once the painting is fully dry, apply a varnish to protect the work and unify the glazes.
Tip — Use a mixture of varnish and oil for final glazes if mastery is achieved (Source 1).
Varnishing

critical techniques

Glazing and Scumbling

Used to apply color over a dry monochrome underpainting. Glazing provides transparent color, while scumbling offers semi-opaque adjustments, allowing the underpainting to influence the final tone (Source 1).

Chiaroscuro/Tenebrism

Wright’s signature style involves exaggerated contrast between light and dark. This is achieved by careful juxtaposition of tones, where the highest tones are enfeebled near shadows and lowest tones heightened near light, creating a dynamic gradation (Source 2, Source 6).

Monochrome Underpainting

Establishing the value structure first using black, ultramarine, and white, before introducing color. This method was common among old masters and recommended by Reynolds (Source 1).

common pitfalls

→Applying color too early before the grisaille is dry, which can muddy the transparent glazes (Source 1).
→Focusing on scientific accuracy in the underdrawing rather than emotional significance, leading to a stiff or lifeless portrait (Source 5).
→Over-modeling or being too tied to the outline, which can result in a 'small' or timid appearance (Source 4).
→Ignoring the laws of simultaneous contrast, which can lead to flat or unnatural tonal transitions (Source 2).

what the sources don't tell us

Where the corpus is silent, we say so rather than guess. These are the gaps a complete recreation guide would normally cover that our source passages don't.

·Specific details of Sir George Cooke’s attire, facial expression, and pose are not described in the sources, so the artist must rely on historical records or the original painting for these visual specifics.
·The exact proportions and background elements of the portrait are not detailed in the provided texts.
·While Wright’s use of tenebrism is noted, the specific lighting setup for this particular portrait is not described, requiring inference from his general style.

grounded in

The technical procedure in this guide traces to the following classical art-instruction texts.

The Practice of Oil Painting↗
- COLOURING A MONOCHROME — applied to Underpainting, glazing, and scumbling techniques.
- ON COPYING — applied to Advice on avoiding over-modeling and smallness.
Laws of Contrast of Colour↗
- 6. Put beside each other two flat tints... — applied to Chiaroscuro and tonal gradation.
The Practice and Science of Drawing↗
- FROM A STUDY BY BOTTICELLI — applied to Importance of finished underdrawing and artistic accuracy.

cross-referenced from

Named facts about this artwork and artist were checked against these reference pages.

Wikipedia bio — Joseph Wright↗
- part 3 — applied to Context of Wright’s dramatic lighting and chiaroscuro style.
- part 1 — applied to Wright’s use of tenebrism and chiaroscuro.

Read more about the corpus on the sources page and how the guides are built on the methods page.

tips & new artworks in your inbox

no spam — unsubscribe anytime.

or to save artworks, chat, and track progress

chat about this artwork

in this vein