( 258 ) 



Vol. V, page 2093. On the appearanee of Saturns ring 

 in 1670. 



Vol. VI, page 3026. Letter on some observations made 

 at Paris on Saturn's ring. An extract of a letter written 

 at Paris. Nov. 7, 1671 by Mr. Cjir. H. 



Vol. VIII, page 6119. Letters between Mr. Huygens 

 and Mr. Slusius about an optical problem. (Gedeeltelijk 

 opgenomen in de Opera Varia pag. 759, voor het grootste 

 deel niet). 



Vol. IX, page 90. His thoughts of Mr. Hooke's obser- 

 vations for proving the motion of the earth. Extract of 

 Mr. Chr. H's letter to the publisher 15 May 1874 from 

 Paris. 



Vol. X, page 443. Experiments on the airpump by Papin, 

 directed by Huygens, as appears in the Discourse, printed 

 at Paris 1674. 



Vol. X, page 477. Experiments made on the airpump 

 upon plants together with a way of taking exhausted re- 

 ceivers away from off the said engine tryed by the same 

 persons mentioned in N°. 119. 



Vol. X, page 492. Experiments on the preservation of 

 bodies. Continuation of the experiments by Hugens and Papin. 



Vol. X, page 542. Experiments on animals in the air- 

 pump by Hugens and Papin. 



Vol. X, page 544. Promiscuous experiments in the air- 

 pump by Hugens and Papin. 



Vol. Vil, page 5027. An attempt to render the cause 

 of that odd phen omenon of the quicksilver remaining sus- 

 pended far above the usual height in the ïorricellian ex- 

 periment. Extract of a letter to the author of the Journ. 

 des Sc. 25 July 1672 (korte mededeeling der proeven in 

 de Opera Varia pag. 769 beschreven, benevens beschouwingen 

 van den uitgever der Phil. Trans.) 



In de »Acta eruditorum" 



1691. Pag. 281. Christ. Hugenii dynastae in Zulichem. 

 Solutio ejusdem problematis. 



1694. Pag. 339. Excerpta ex epistola C. H. Z. ad G. G. L. 



