ET JUBILÉ DE M. LE JOLIS 89 



thirtiethofDecember the National Society ofNatural andMalhe- 

 matical Sciences of Cherbourg complètes the fiftieth year of its 

 existence. 



We remember with pleasure the services to science of some 

 of your distinguished members, suchas M. Bertin, director of 

 the National School of Naval Architecture, and the late Marquis 

 of Galigny, one of our own foreign Honorary Menabers. 



Upon the decease of the latter, the Acaderay entrusted to its 

 RecordingSecretary (one of your own members) the préparation 

 of a biographical notice of our late eminentassociate. Wethere- 

 fore take pleasure in presenting to the National Society of Cher- 

 bourg a copy of this memoir as the most appropriate and most 

 cordial souvenir for this occasion. 



We hâve the honor to be. Gentlemen, Your obt. Servants 

 James B. Thayer, Acting Président; William Watson, Secre- 

 tary. 



Société d'Histoire naturelle de Portland, 



Portland, Maine, December 1, 1901. 



Gentlemen, On behalf of the Portland Society ofNatural His- 

 tory, I bave the honor to acknowledge the receipt of your cour- 

 teous announcement ofthe approaching fiftieth anniversary of 

 the founding ofthe Société Nationale des Sciences Naturelles et 

 Mathématiques de Cherbourg. 



Ant it is with sincère gratification that I hâve the pleasure of 

 extending to your learned body the hearty congratulations of 

 this Society — (but a few years the senior of your own) — upon 

 the completionof your golden ère. 



Your admirable work in the advancement of Science is well 

 known to us throughsome volumes ofyour valued Mémoires 

 with which you hâve favored us, and which we highly prize. 



Your successful career, and the enlightened and libéral sup- 

 port which you bave enjoyed, excite our admiration, and, I raay 

 add, fill us with envy, when compared with our own history — 

 which began with the year 1843, and bas continued to this day, 

 through varying fortunes (having twice lost ail its belongings by 

 fire : in 1854 and 1866.J 



We hope that you may escape ail misfortunes, aqd continue 



