11.09.2019 Views

Historical Painting Techniques, Materials, and Studio Practice

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Table 2.<br />

Samples from the vest wall if the Holy Sepulchre Chapel, Winchester Cathedral<br />

Sample No:<br />

34<br />

35<br />

36<br />

Location <strong>and</strong> Description<br />

W. wall, upper tier, N. side, green background<br />

colour below white scroll.<br />

W. wall. upper tieT, St. John, drapery below<br />

knee, black over pink.<br />

W. wall, upper tier, S. side, (left as viewed) leg<br />

of Joseph of Aramalhea, dark green linear detail<br />

on back of calf.<br />

Original Polychromy<br />

• viviani!e IOOllm<br />

• charcoal black 80llm<br />

• lime plaster substrate 60llm<br />

• darkened lead pigment l5IJm<br />

• lime plaster substrate 250 11m<br />

• vivianite 150JJm<br />

• charcoal black <strong>and</strong> lime white 40llm<br />

• I ime plaster substrate IOOJJm<br />

• trace of red pigment from 12th century scheme 20JJm<br />

Coatings! Indications of binding media!<br />

Pigment alterations<br />

• beeswax coating containing calcium carbonate <strong>and</strong> calcium sulphate 20llm<br />

• proteinaceous coaling 30llm<br />

• vivianite has partially altered from blue to yellow<br />

• beeswax (trace)<br />

• proteinaceous coating<br />

• lead pigment has altered to fonn a dark product which appears to be a mixtur<br />

of lead dioxide (plattnerite) <strong>and</strong> lead sulphide.<br />

• beeswax (trace)<br />

• proteinaceous coating<br />

• vivianite has partially altered from blue to yellow<br />

Table 3.<br />

Samples from the north wall of the Holy Sepulchre Chapel, Winchester Cathedral<br />

Sample No:<br />

11<br />

12<br />

13<br />

14<br />

Location <strong>and</strong> Description<br />

N. wall, E arch, soffit, E. side, upper figure, left<br />

proper arm, pale pink drapery.<br />

N. wall, E arch, chamfer on S. side, E end, 6th<br />

ashlar block from apex, yellow over green on<br />

plaster.<br />

wall, E arch , S face, E side, C13th vine<br />

scroll in red on plaster.<br />

N. wall, E arch, soffit, E side, lower figure,<br />

thick beige coating over green paint of drapery.<br />

Original Polychromy<br />

• white, lead-containing pigment with charcoal black, calcium carbonate,<br />

calcium sulphate & red pigment particles<br />

• yellow, lead-containing layer which appears white towards perimeter. A<br />

few yellow iron oxide particles are present<br />

• lime ground - calcium carbonate with calcium sulphate <strong>and</strong> a trace of<br />

wax present<br />

• yellow earth pigment in lead white matrix<br />

• vivianite in lead white matrix<br />

• lime white ground<br />

• red earth<br />

• lime ground<br />

• vivianite in lead white matrix<br />

Coatings! Indications of binding media!<br />

Pigment alterations<br />

• proteinaceous coating<br />

• proteinaceous material is indicated in both paint layers<br />

• vivianite has partially altered from blue to yellow<br />

• beeswax<br />

• proteinaceous coating<br />

• beeswax<br />

• proteinaceous coating<br />

• thick lead white layer<br />

• vivianite has partially altered from blue to yellow<br />

The tables give the location where each sample was taken, the sample number, <strong>and</strong> the stratigraphy of the various layers from the top down,<br />

with the thickness of each layer in microns (Jim).<br />

Table 4.<br />

Samples from the south wall of the Holy Sepulchre Chapel, Winchester Cathedral<br />

Sample No:<br />

16<br />

17<br />

18<br />

19<br />

20<br />

41<br />

Location <strong>and</strong> Description<br />

S. wall, E. bay, above recess, blue background<br />

behind donkey's left ear, thick dark impasto<br />

over blue background.<br />

S. wall, W bay, above recess, E. side, old<br />

cleaning test area, coating from in key mark<br />

S. wall, W. bay, above recess, E. side, old<br />

cleaning test area, coating over red! brown paint<br />

layer.<br />

S. wall, W. bay, above recess, W. end, CI2th<br />

angel, area fluoresces in uv, coating over black<br />

<strong>and</strong> orange paint.<br />

S. wall. W. bay, recess, lower zone, central area<br />

of dark red 'drapery', coating over redlblack<br />

paint.<br />

S. wall, E. bay, above recess, Washing offeer,<br />

bright green from 'border' above Christ's head.<br />

Original Polychromy<br />

• darkened lead pigment 100llm<br />

• natural ultramarine (2Sllm)<br />

• organic analysis only<br />

• carbon black pigment 5J1m<br />

• red earth in lime matrix 10JJm<br />

• lime ground 40).lm<br />

• lime plaster 200llm<br />

• black <strong>and</strong> red particles in a lead white matiix 351lm<br />

• lime ground l40llm<br />

- lime plaster substrate 400JJm<br />

• red iron oxide 2SIlm<br />

• charcoal black 40llm<br />

• blue/green copper chloride green layer 50llm<br />

• paler blue/green copper chloride layer 50llm<br />

• calcium carbonate with a little calcium sulphate present 20llm<br />

Coatings! Indications of binding media!<br />

Pigment alterations<br />

• proteinaceous material on surface<br />

• lead pigment has altered to fonn a dark product which appears to be a mixture<br />

of lead dioxide (plattnerite) <strong>and</strong> lead sulphide<br />

• layers of beeswax<br />

• beeswax with a small amount of proteinaceous material<br />

• extremely thin coating present which is almost completely combined with the<br />

upper pigment layer. As yet unidentified<br />

• beeswax<br />

• trace coating on surface<br />

• copper chloride green may be the product of an alteration prOcess<br />

The table gives the location where each sample was taken, the sample number, <strong>and</strong> the stratigraphy of the various layers from the top down,<br />

with the thickness of each layer in microns (/-un).<br />

Table 5.<br />

Samples from the vault if the Holy Sepulchre Chapel, WiNchester Cathedral<br />

Sample No:<br />

15<br />

37<br />

38<br />

39<br />

40<br />

42<br />

43<br />

44<br />

45<br />

46<br />

Location <strong>and</strong> Description<br />

Vault, E. bay, E. segment, under left proper<br />

h<strong>and</strong> of Christ, 'pea' green background of<br />

m<strong>and</strong>orla.<br />

Vault, E. bay, S. segment, W. side, prophet in<br />

roundel, darkened cheek patch.<br />

Vault, E. bay, S. segment, W. side, prophet in<br />

roundel, yellow flesh painting of h<strong>and</strong>.<br />

Vault, E. bay, S. segment, W. side, prophet in<br />

roundel, h<strong>and</strong>, dark flesh area.<br />

Vault, E. bay, W. side, S. segment, prophet in<br />

roundel, left side, dark b<strong>and</strong> around edge of<br />

roundel.<br />

Vault, E. bay, S. segment, W. side, prophet in<br />

roundel, red linear detail of robe over now black<br />

layer.<br />

Vault, E. bay, E. segment, m<strong>and</strong>orla, S. side,<br />

green border with black on surface.<br />

Vault, E. bay. E. segment, S. side, green<br />

background below Christ's h<strong>and</strong>, white<br />

decorative spot over green.<br />

Vault, E. bay, E. segment, m<strong>and</strong>orla, S. side,<br />

green over red.<br />

Vault, E. bay, E. segment, m<strong>and</strong>orla, N. side,<br />

brilliant green of border.<br />

Original Polychromy<br />

• vivianite 75JJm<br />

• black (darkened cinnabar) particles in lead white matrix ISllm<br />

• plaster substrate 140llm<br />

• yellow iron oxide 15JJm<br />

• lime white ground 50l1m<br />

• plaster substrate 200llrn<br />

• charcoal black <strong>and</strong> red iron oxide 40l1m<br />

• lime white ground 100llm<br />

• plaster substrate<br />

• dark red/brown lead-based layer 651lm<br />

• lime white ground 751lm<br />

• red earth 1251lm<br />

• dark redlbrown lead-based material 551lm<br />

• white ground 751lm<br />

• plaster substrate 400llm<br />

• dark red/brown lead-based material 75J.1m<br />

• lime white ground 180llm<br />

• lead white 90l1m<br />

• vivianile 55J.1m<br />

• white layer (calcium carbonate combined with calcium sulphate) 50llm<br />

• trace red pigment<br />

• pale blue/green copper-based layer 351lm<br />

• white ground 751101<br />

• plaster substrate 300llm<br />

Coatings! Indications of binding media!<br />

Pigment alterations<br />

• beeswax<br />

• proteinaceous coating<br />

• vivianite has partially altered from blue to yellow<br />

• proteinaceous coating with additional components of calcium carbonate,<br />

calcium sulphate <strong>and</strong> a trace of wax 151lm<br />

• cinnabar has altered to its black meta fonn<br />

• proteinaceous coating 10llm<br />

• proteinaceous coating with additional components of calcium carbonate <strong>and</strong><br />

calcium sulphate 30JJm<br />

• proteinaceous material has penetrated paint layers<br />

• proteinaceous coating 20llm<br />

• lead pigment has altered to fonn a dark material which appears to be a mixture<br />

of lead dioxide (plattnerite) <strong>and</strong> lead sulphide<br />

• proteinaceous coating 2SI1m<br />

• lead pigment has altered to fonn a dark material which appears to be a mixture<br />

oflead dioxide (plattnerite) <strong>and</strong> lead sulphide<br />

• proteinaceous coating IOllm<br />

• lead pigment has altered to fonn a dark material which appears to be a mixtur<br />

of lead dioxide (plattnerite) <strong>and</strong> lead sulphide<br />

• proteinaceous coating 51lm<br />

• beeswax coating<br />

• proteinaceous material is incorporated in wax coating 351lm<br />

• proteinaceous coating 51lm<br />

The table gives the location where each sample was taken, the sample number, <strong>and</strong> the stratigraphy of the various layers from the top down,<br />

with the thickness of each layer in microns (Jim).<br />

102 <strong>Historical</strong> <strong>Painting</strong> <strong>Techniques</strong>, <strong>Materials</strong>, <strong>and</strong> <strong>Studio</strong> <strong>Practice</strong>

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!