58 THE ROYAL SOCIETY 



BATAVIAN SOCIETY OF EXPERIMENTAL PHILOSOPHY, 



ROTTERDAM 



REGALI SOCIETATI SOCIETAS PHILOSOPHIAE EXPERIMENTALIS BATAVA, anno 

 MDCCLIX a Steven Hoogendijk Roterodami instituta, Salutem. Ducenti 

 quinquaginta fere anni sunt ex quo Carolus Secundus Rex, ut artes atque 

 scientias, praesertim philosophica studia, quae solidis experimentis conantur 

 aut novam extundere philosophiam aut expolire veterem, promoveret, Socie- 

 tatem instituit consistentem de Praesidente Concilio et Sodalibus, quae 

 vocabatur et nuncupabatur Regalis Societas. Sodalium eius magna multitudo 

 iam dudum immortal! doctrinae et ingenii acuminis gloria in omnibus orbis 

 terrarum partibus floret per ea opera quae magnam partem in libris Philo- 

 sophical Transactions, qui dicuntur, servantur. Neque minus qui in eorum 

 locum successerunt optimis artibus maximaque eruditione studia philosophica 

 colere et famam Regalis Societatis tueri pergunt. Optimo igitur iure Socie- 

 tatem vestram fundatam celebratis. Societas nostra, quae isdem studiis 

 operam dat, vobis successum ex imo pectore gratulatur et ut in posterum 

 quoque Societati vestrae non modo eadem gloria frui sed etiam magis 

 magisque crescere detur optat et orat. Quanto studio vobiscum concele- 

 braremus natalem Societatis ut significaremus, hoc documentum, signatum 

 sigillo nostro cum voce, * Certos feret experientia fructus,' conficiendum et vobis 

 mittendum curavimus. 



Datum Roterodami, die XIV mensis lulii MCMXIL 

 Nomine Societatis philosophiae experimentalis Batavae : 



S. BIRNIE, Praeses. 



R. H. VAN DORSTEN, Ab actis. 



NORWAY 



ROYAL UNIVERSITY OF NORWAY, CHRISTIANIA 



THE ROYAL UNIVERSITY OF NORWAY TO THE ROYAL SOCIETY OF LONDON. 

 Greeting. A quarter of a millennium has elapsed since the foundation of the 

 Royal Society. Since the days of Boyle and Newton, the Royal Society has 

 enrolled on its list of members the names of almost all the eminent scientists 

 of Great Britain, and among these are recorded the illustrious names of 

 founders of all branches of modern science. Always alive to the vast 

 importance of science to the various spheres of mental life throughout the 

 world, the Royal Society has, in all likelihood, contributed more towards 

 the development and advancement of mankind than any other scientific 

 association. As a natural consequence of this leading position among 



