Apophyllite under polarized light Finish:Single and 12 years old Muriel

and 12 years old Muriel Blackburn daughter of Mr

24th February 1969

with vessels on the River Thames

County of Lincoln

A man walking through the streets carrying a pole over his shoulder hanging with boxes

Apophyllite under polarized light Finish:Single and 12 years old MurielThree figures showing a variety of the Faroe Islands mineral Apophyllite (named Tesselite by David Brewster) viewed under the microscope. Figure 1 Faroe Apophyllite viewed under polarized light at x50 magnification. Figure 2 Colours produced by Apophyllite 'when crossed by a plate of sulphate of lime, which gives one unified blue tint. Figure 3 Circular system of rings round the axis of 'Apophyllite Surcomposee.' Plate 21 from the paper 'Account of a