Microbial Life Discovered on Rembrandt’s The Night Watch
Scientists are mapping the invisible ecosystem living on the Dutch masterpiece.
1Unseen Life on Canvas
Microbiologists from the ARTIS-Micropia museum are conducting a unique study on Rembrandt’s 1642 masterpiece, The Night Watch. By taking samples directly from the canvas at the Rijksmuseum, researchers aim to identify the invisible microorganisms currently residing on the painting. This project represents a novel intersection between microbiology and classical art conservation.
2The Night Watch Lives
The findings are currently displayed at the ARTIS-Micropia exhibition, which opened on November 11. A life-size reproduction of the painting features numbered markers indicating where and when specific samples were collected. Visitors can observe the actual microbes growing in Petri dishes, revealing the diverse biological landscape present on the historic Dutch canvas.
3Unexpected Microbial Findings
Initial analysis identified common soil bacteria and skin-protecting microorganisms on the painting. A notable discovery was Microbacterium saccharophilum, a species originally identified in a Japanese sugar refinery. The presence of this specific microbe on the Dutch masterpiece remains a mystery, highlighting how scientific inquiry often generates more questions than initial answers.
4Expanding Research Scope
The research project involves six scheduled sampling trips to the Rijksmuseum, with three completed so far. Currently, 20 bacterial findings are on display, while 10 additional samples are undergoing incubation and identification. By the end of the project in February, researchers expect to have documented approximately 60 distinct microbial species on the canvas.
5Changing Public Perception
ARTIS-Micropia, the world’s first museum dedicated solely to microbes, aims to shift public perception regarding microorganisms. While many associate microbes primarily with disease, researchers emphasize that pathogens represent only about 1% of known species. This exhibition seeks to foster broader public interest in microbiology by connecting it to a famous cultural icon.
6Historical Context of Preservation
This study complements Operation Night Watch, a massive restoration project launched in 2019. In 2023, researchers discovered a rare lead compound beneath the primer, likely applied by Rembrandt to protect the canvas from mold. This historical evidence suggests the artist was already actively concerned about the threat of microbes in damp environments.
7Interdisciplinary Scientific Collaboration
The collaboration marks a significant shift in how art institutions approach conservation. Rijksmuseum director Taco Dibbits noted that thirty years ago, such integration between humanities and exact sciences was unimaginable. Today, this interdisciplinary approach is considered essential for both the physical preservation of the painting and for increasing public engagement with art.
8Future of Art Conservation
The exhibition remains open until the end of May, providing a rare look at the intersection of biology and art history. By mapping the microbial life on The Night Watch, scientists are creating a new scientific record for the painting. This ongoing research highlights the evolving nature of modern museum-based conservation efforts.
Original article: Hyperallergic — Microbial Life Discovered on Rembrandt’s The Night Watch