![Invirtiendo la Fotografía: G.B. della Porta - José Álvarez Fotografía | Fotografia, Habitaciones oscuras, Figuras en movimiento Invirtiendo la Fotografía: G.B. della Porta - José Álvarez Fotografía | Fotografia, Habitaciones oscuras, Figuras en movimiento](https://i.pinimg.com/736x/04/43/05/0443053455e66bda80f0edbfd2b9b286.jpg)
Invirtiendo la Fotografía: G.B. della Porta - José Álvarez Fotografía | Fotografia, Habitaciones oscuras, Figuras en movimiento
![Doctrine of signatures: (above) a plant (arum) with seed-pods resembling the horn of a unicorn, and (below) a unicorn's head. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection Doctrine of signatures: (above) a plant (arum) with seed-pods resembling the horn of a unicorn, and (below) a unicorn's head. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection](https://iiif.wellcomecollection.org/image/V0025793/full/300,/0/default.jpg)
Doctrine of signatures: (above) a plant (arum) with seed-pods resembling the horn of a unicorn, and (below) a unicorn's head. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection
![Doctrine of signatures: (above) a plant (crowfoot) resembling the antlers of a stag, and (below) the head of a stag. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection Doctrine of signatures: (above) a plant (crowfoot) resembling the antlers of a stag, and (below) the head of a stag. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection](https://iiif.wellcomecollection.org/image/V0025788/full/760%2C/0/default.jpg)
Doctrine of signatures: (above) a plant (crowfoot) resembling the antlers of a stag, and (below) the head of a stag. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection
![Doctrine of signatures: (above) a plant with roots resembling the human hand, and (below) a hand. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection Doctrine of signatures: (above) a plant with roots resembling the human hand, and (below) a hand. Coloured ink drawing, c. 1923, after G.B. Della Porta. | Wellcome Collection](https://iiif.wellcomecollection.org/image/V0025805/full/full/0/default.jpg)