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FURTHER CONSIDERATION OF PAINT MATERIALS (Continued)
These enquiries have been further assisted by another publication by Dover entitled "The materials and techniques of medieval painting" by Daniel V Thompson which has provided further information regarding the materials used around the time of the renaissance. This book too is a reprint of an original publication of 1956.
Because of the unexpected nature of the blue paint enquiries have been directed towards the blue and green colours which were available at the time or later.
The following pigments have been excluded as they contain metal elements which were not found on analysis:-
Chromium oxide green
Mr H H Bland BSc C Chem FRSC
UK Forensic Science Services Ltd, Melbourn Science Park, Moat Lane, Melbourn, Royston Herts SG8 6EJ
5th September, 1988