SKETCH OF SIR G. B. AIRY. 101 



Secretary of the Smithsonian Institution, Washington City, D. C, 

 Dr. E. L. Youmans of New York, and General Hector Tyndale, of 

 Philadelphia, to act as a Board of Trustees to "take charge of the 

 above sum, to carefully invest it in permanent securities ; and I fur- 

 ther direct that the said Board shall, for the present, appropriate the 

 interest of the fund in supporting, or in assisting to support, at such 

 European universities as they may consider most desirable, two (2) 

 American pupils who may evince decided talents in physics, and who 

 may express a determination to devote their lives to this work. My 

 desire would be that each pupil should spend four years at a German 

 university, three of those years to be devoted to the acquisition of 

 knowledge, and the fourth to original investigation. 



If, however, in the progress of science in- the United States, it 

 should at any time appear to the said Board that the end herein pro- 

 posed would be better subserved by granting aid to students, ox for 

 some special researches in this country, the Board is authorized to 

 make appropriations from the income of the fund for such purposes. 



I further direct that vacancies which may occur in said Board of 

 Trustees, by death or otherwise, shall be filled by the President of the 

 National Academy of Sciences. 



If in the course of any year the whole amount of the interest which 

 accrues from the fund be not expended in the manner before men- 

 tioned, the surplus may be added to the principal, or may be expended 

 in addition to the annual interest of another year, 



If at any time any organization shall be established, and money 

 provided by other persons for the promotion of such original research 

 as I have in view, I authorize the said Board of Trustees to exercise 

 their discretion as to cooperating in such work from the income of this 

 fund. 



In witness whereof I have hereunto set my hand and seal this 7th 

 of February, 1873, in the city of New York. 



(Signed) Join* Tyndall (l. s.) 

 In presence of 



(Signed) C. Bttrritt Watte, 



(Signed) L. E. Fuller. 



SKETCH OF SIR G. B. AIRY. 



IR GEORGE BIDDELL AIRY, the Astronomer Royal, was born 

 on the 27th of June, 1801, at Alnwick, in Northumberland. His 

 education was first cared for at two private academies, now at Here- 

 ford, now at Colchester. From the Colchester Grammar-School, when 

 eighteen years of age, he went, in 1819, to Trinity College, Cambridge. 



s 



