'Now You See Us’ at the Tate Britain, London (until 13 October) celebrates over 100 women artists who worked in Britain between 1520 and 1920. The exhibition presents paintings, pastels, needlework, photography and sculpture, that for the most part have been little known and rarely seen.

Here you’ll find Mary Beale’s glamorous depictions of 18th century society ladies, and a rather tender sketch that she made of her young son, his curly tresses tumbling to his shoulders. And there’s Mary Grace, whose only surviving painting is a self-portrait. In a fine primrose silk dress, she sits bolt upright, a palette resting on one arm, and regards us with stern authority.

In the 19th century rooms, Rosa Bonheur takes us to the Highlands, to mournful sheep grazing under a stormy sky. Elizabeth Forbes presents a naturalistic image of a farm labourer, head turned to the floor, in quiet conversation with a young woman at the edge of the woods - terribly romantic. And with its bold brushstrokes and flat appearance, Louise Jopling’s self-portrait suggests a Mancunian Manet.

There’s a good deal of buried treasure here, and many hidden gems.

As we progress through the galleries, we also learn of the many hurdles women artists had to overcome.

For the most part, they were subject, first to their fathers, and then their husbands, limited to the domestic sphere. Having no access to apprenticeships, art was a private, amateur pursuit, one that was only available to the higher social orders, or those related to male artists. Their lives and work were poorly documented.

In 1768 Angelica Kauffman and Mary Moser became founding members of the Royal Academy (along with 32 men). However, when Johann Zoffany memorialised the new institution with a group picture of the Academicians at a life class, Kauffman and Moser were reduced to two indistinct portraits on the back wall - women were barred from life classes on the grounds of propriety. It would take more than 150 years for the next woman to be elected to membership.

There was a commonly held view that women were best suited to ‘imitation’ rather than invention. Miniatures, pastels and watercolours, sectors in which women thrived, were treated dismissively as ‘lower arts’ by the establishment. In 1770, the Royal Academy banned from its exhibitions ‘needle-work, artificial flowers, cut paper, shell-work, or any such baubles’. Joshua Reynolds, the Academy’s President, remarked that working in pastel was ‘just what ladies do when they paint for their own amusement.’

Nevertheless, they persisted. Between 1760 and 1830 some 900 women exhibited at public shows.

Flower painting was considered an appropriate artform for women. Mary Gartside created sublime floral watercolours, whilst at the same time pioneering colour theory. Mary Delany’s collages of spider lilies and flowering raspberry - made with coloured paper placed on black backgrounds (what she called her ‘paper mosaicks’) - are exquisite.

Gradually in the Victorian era women artists found new galleries, exhibition spaces and events that were less conservative than the Royal Academy. At the same time, they campaigned for access to training, governance and awards. Florence Claxton’s ‘Woman’s Work’ of 1861 shows some women fawning at the feet of a pompous man who sits under a false idol. Other women meanwhile are confined behind ‘the ancient wall of Custom and Prejudice,’ and the door to the medical profession is locked. Only one female artist, Rosa Bonheur, has climbed a ladder to view the ‘forbidden fruit’ beyond.

Founded in 1871, the Slade School of Fine Art in London offered women an education on equal terms with men, and, at last, access to life classes. Soon women students outnumbered men by three to one.

As we enter the 20th century rooms, and the progress towards broader freedoms, we see work from artists who have become more familiar to us: Gwen John, Laura Knight, Vanessa Bell, Nina Hamnet, Helen Saunders. Still, some of these magnificent painters have taken a century to receive proper recognition.

Leaving the exhibition, one can’t help thinking about wasted talent. So many remarkable artists unseen and unacknowledged. So many great works neglected and ignored.We may also be prompted to reflect on the world of work. Are our biases blinding us to untapped abilities and underutilised expertise? Are we failing to realise the true potential of the human capital at our disposal? Are we still missing out on buried treasure and hidden gems?

'I believe talent is like electricity. We don’t understand electricity. We use it. Electricity makes no judgment. You can plug into it and light up a lamp, keep a heart pump going, light a cathedral, or you can electrocute a person with it. Electricity will do all that. It makes no judgment. I think talent is like that. I believe every person is born with talent.'
Maya Angelou

'The most as you'll ever go
Is back where you used to know.
If grown-ups could laugh this slow
Where as you watch the hour snow,
Years may go by.
So hold on to your special friend.
Here, you'll need something to keep her in:
"Now you stay inside this foolish grin"
Though any day your secrets end.
Then again,
Years may go by.’

Rickie Lee Jones, 'On Saturday Afternoons In 1963’

No. 475