88 CINQUANTENAIRE DE LA SOCIÉTÉ 



compiere il cinquantesimo anno délia sua esistenza; ed ho dalla 

 Facoltà ricevuto il grato incarico di esprimere aile Sig''^ Loro 

 111""^ per taie occasione, corne faccio con la présente lettera, 

 sentimenti di simpatia per la Società Nazionale di Cherbourg, 

 ed auguri per la felice continuazione dei pregiati suoi lavori. 



Con ossequio, godo di potermi dire délie Sig'" V* III"'^ Devo- 

 tissimo : Antonio Pacinotti. 



Observatoire de l'Université de Californie. 



Mount Hamilton, Nov. 6, 1901. 



M. H.Jouan, Président, Société Nationale des Sciences natu- 

 relles et mathématiques, Cherbourg, France. 



My dear M. Président : In the name of the Lick Observa- 

 tory of the University of California, I beg to congratulate the 

 Société Nationale des Sciences Naturelles et Mathématiques de 

 Cherbourg upon the completion of the first tifty years of its exis- 

 tence, and to express the sincère hope that its usefulness in pro- 

 moting Science will be continued indefinitely, I remain, my 

 dear M. Président, Yours very faithfully, W. W. Ca.mpbell, Di- 

 rector. 



Observatoire de Harvard Collège, Cambridge, Mass. 



Nov. 9, 1901. 



M. L. Corbière, Secretary, Société Nationale des Sciences de 

 Cherbourg, France. 



Dear Sir : Will you kindly convey to your honorable Society 

 my congratulations and best wishes upon the occasion of its 

 fiftieth Anniversary, and accept in behalf of this Observatory a 

 copyof a recentiy published volume of its Annals which I hâve 

 had the pleasure of forwarding to day ? 



Very Iruly yours : Edward C. Pickering, Director. 



Académie Américaine des Arts et Sciences, à Boston. 



Boston, 12 December 1901. 



Gentlemen, We hâve the honor to acknowledge the receipt of 

 your circular letter of October 1901, informing us that on the 



