To verify that Florence used these processes, the images were examined at the HERCULES Laboratory by a group of conservation experts led by Art Kaplan, associate scientist at the GCI, and António Candeias, a professor at the department of chemistry and biochemistry and senior researcher at the University of Évora’s HERCULES Laboratory.
“This research is an important step for the IMS, which has one of Hercule Florence´s photographs in its collection,” said Millard Schisler, collection manager at Instituto Moreira Salles. “Being able to use the techniques applied in this project, we now also open doors for further scientific studies of items from our collection, and the knowledge that this brings to us all.”
The three images were studied using a number of analytical techniques. Scientists used photomicrography to view minute details, finding that the paper used to create the images was similar to that found in Florence’s existing archival materials. X-ray fluorescence was able to identify silver and gold as the imaging metals (silver in the diploma and gold in the pharmacy labels.). ATR-FTIR analysis identified a greater amount of protein in the pharmacy labels possibly indicating the presence of urine.
Experts will continue to analyze Florence’s works, with the hope of gaining additional insights and a better understanding of his early breakthroughs.
“For the IHF it was a priority to know the composition of Hercule Florence’s photographic artifacts so as to be able to preserve them for another 190 years,” said Francis Melvin Lee, superintendent researcher at the IHF.
Contributors include:
American scholar Grant Romer and Mexican researcher Ariadna Romer, Academy of Archaic Imaging in Rochester, USA
Brazilian professors Boris Kossoy and Márcia Rizzutto, University of São Paulo
Researchers Millard Schisler (head of collections), Sergio Burgi (photography coordinator), and Guilherme Dias (conservator), Instituto Moreira Salles
Researcher-in-charge Francis Melvin Lee, Instituto Hercule Florence
The Instituto Moreira Salles is a Brazilian non-profit art institution with venues in São Paulo, Rio de Janeiro, and Poços de Caldas. IMS was founded in 1992 and holds important collections in photography, music, literature,visual arts and prints and drawings. It is renowned for its exhibitions, highlighting artists and themes from Brazil and abroad. IMS also publishes exhibition catalogues and books on photography, literature, and music, in addition to the print magazines ZUM, dedicated to contemporary photography in Brazil and around the world, and serrote, a quarterly publication of essays and ideas.
The Institute Hercule Florence for the Study of 19th-Century Brazilian Society and Environment has the central interest of gathering, preserving, and disseminating the entire collection of available information about the artist, traveler, and inventor Hercule Florence (1804–1879). It also aims at understanding the thinking of 19th-century Brazil through research, conservation, and dissemination of textual, iconographic, and photographic documents related to the Brazilian 19th century. Preserving this past, reflecting on it, and producing knowledge from it is a way of contributing to the understanding of the present. Find out more about the institute on their about page.
The HERCULES Laboratory of the University of Évora is a research infrastructure dedicated to the study and enhancement of cultural heritage, with emphasis on the integration of methodologies from physical sciences and materials, in interdisciplinary approaches. It integrates several laboratories with state-of-the-art equipment with the ability to develop innovative research, including in situ non-destructive analysis, microanalysis, high-resolution chemical analysis, and the development of innovative materials and products, from bio to nanotechnology.