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Justine BAYLEY, Roger DOONAN and David DUNGWORTH, English Heritage (United Kingdom)

The Earliest Sash-Window in England?

Table 1 – Glass analyses (mean and standard deviation of normalised SEM-EDX analyses)

	Na2O	MgO	Al2O3	SiO2	P2O5	SO3	Cl	K2O	CaO	TiO2	MnO	Fe2O3
Diamond	2.59	2.91	0.99	62.80	2.93	0.58	0.41	4.41	20.36	0.19	0.22	1.61
(n=8)	0.80	0.73	0.23	1.03	0.24	0.14	0.25	1.62	1.27	0.07	0.15	0.23
Rectangle	4.21	3.54	1.97	63.94	1.71	0.52	0.37	3.11	19.02	0.11	0.06	1.45
(n=9)	0.97	0.58	0.48	1.22	0.38	0.19	0.10	1.24	1.64	0.11	0.12	0.64
All	3.45	3.24	1.51	63.40	2.28	0.55	0.39	3.72	19.65	0.15	0.13	1.52
	1.20	0.71	0.63	1.25	0.70	0.17	0.18	1.54	1.59	0.10	0.15	0.48

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