RECORDS OF MEETINGS. 615 



" On the Political Changes of Europe, especially from 1100 

 A. D. to the Present Time," illustrated by a series of colored 

 maps, showing the boundaries of each tribe and nation for every 

 ten years. 



The following paper was presented by title : — 



" On a New General Theory of Errors." By W. E. Story. 



Nine hundred and forty-ninth Meeting. 



May 11,1904. — Annual Meeting. 



The President in the chair. 



The Corresponding Secretary read the following letter from 

 Sir Henry E. Roscoe, in reply to the congratulatory resolution 

 passed by the Academy March 9, 1904 : 



" To my friends and brothers in Science living and working in New 

 England, New York, and Pennsylvania, I, from Old England, send my 

 affectionate greetings and best thanks. 



"It is pleasant to receive, as 1 have done to-day, assurances of appre- 

 ciation from those speaking other tongues than English and living in 

 other environments than those to which one is accustomed, but it is a 

 still greater pleasure to hear in familiar accents from people of the same 

 blood having aims and sympathies closely akin to one's own, words of 

 encouragement and good will. Such words you have sent me. 



" English men of science look with brotherly admiration, sometimes per- 

 haps not unmixed with envy, on the wonderful progress which America 

 is wisely making in the provision for teaching and research of the highest 

 kind, thanks to the open-handed liberality of her wealthy citizens. 



•• Nor with you is the prime mover wanting. You are rich in men 

 willing to devote themselves to a scientific career, men gifted with the 

 true scientific spirit. With this union of mind and matter who can place 

 a limit to the work which America will produce? 



" Henri E. Koscoe. 



"Apkil22, 1904." 



The Corresponding Secretary also read letters from E. S. 

 Sheldon, accepting Fellowship ; I. C. Russell, A. Jacobi. ac- 

 knowledging election as Associate Fellows, lie also announced 



