iH^mnrtal. 



The Trustees of the Carnegie Institution of Washington direct 

 that the following Minute be made in the permanent records of 

 the Institution : 



Samuel Pierpont Langley, Secretary of the Smithsonian In- 

 stitution since 1887, and Trustee of the Carnegie Institution of 

 Washington since its foundation, died at Aiken, South Carolina, 

 February 27, 1906. 



Distinguished for his brilliant investigations in astronomy, 

 astrophysics, and aerodynamics especially, and keenly interested 

 in all enterprises for human advancement, he watched the devel- 

 opment of this Institution with an enthusiasm tempered by sound 

 judgment and sane expectations. 



He was one of the first to suggest a combined observatory and 

 laboratory for the study of solar physics, and his advice and co- 

 operation have been of signal service in the inauguration of the 

 Solar Observatory on Mount Wilson. 



Manifesting in an unusual degree the zeal, the industry, and 

 the comprehension essential to effective achievement in scientific 

 pursuits, his life and work present a conspicuous example to 

 his colleagues and successors who are charged with the duty of 

 promoting original research. 



