“My dear Sir,
“I return you the box, with the remains of the samples.
“A. Portion of coating taken from the antæ of the Propylaeum.
“The blue produced by carbonate of copper: wax being mingled with the colour.
“B. Portion of coating taken from the soffits of the mutules of the Theseum.
“The blue is a frit or vitreous substance coloured by copper. Wax is present here.
“C. Portion of coating taken from the columns of the Theseum.
“I am doubtful about this surface. I do not find wax or a mineral colour, unless it be one due to a small portion of iron. A fragrant gum appears to be present in some pieces, and a combustible substance in all. Perhaps some vegetable substance has been used.
“D. Portions of coatings from the caissons or lacunaria of the Theseum.
“The blue is a copper frit, or glass, with wax.