Taken by the National College for heating, ventilating, refrigeration and fan engineering

Taken by the National College for heating, ventilating, refrigeration and fan engineering

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783. Photograph by Geremy Butler

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783. Photograph by Geremy Butler

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.

Third painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783. Photograph by Geremy Butler

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783. Photograph by Geremy Butler

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783. Photograph by Geremy Butler

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.

Sixth painting in the series entitled 'The Progress of Human Knowledge and Culture' by James Barry, 1777-1783.