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The Thinker
The Thinker, Modeled 1880-1881, enlarged 1902-1904; cast 1919
Auguste Rodin, French
Bronze
6 feet 7 inches, 51 1/4 × 55 1/4 inches (200.7 × 130.2 × 140.3 cm)
Bequest of Jules E. Mastbaum, 1929
F1929-7-123
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Conservation of Rodin's The Thinker

Introduction

In 1992, after being displayed outdoors in an urban-industrial environment for over 60 years, Philadelphia’s version of Rodin’s The Thinker showed the effects of "acid rain" and particulate deposition common in such atmospheres. Streaking, caused by the run-off of condensate from the sculptural forms, had etched a pattern of irregular rivulets in the surface, while urban aerosols from industrial and vehicular sources built up black and other accretions.

The forms were obscured; Rodin’s modeling could no longer be "read," with some high points black and recesses bright due to corrosion.

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