PEIZE-QUESTIONS OF SCIENTIFIC SOCIETIES. 437 



or Flemisli, and addressed, post free, to Ad. Qiietelet, permanent secre- 

 tary, before August 1, 1875. 



The academy insists upon the utmost accuracy in qirotatious^ authors 

 should, therefore, be particular to specify the editions and pages of the 

 works cited. Only manuscrij)t illustrations will be received. 



Authors should not sign their names on their papers, but merely affix 

 a private mark, repeated on a sealed note containing their names and 

 addresses. Papers sent after the prescribed time, or those the writers 

 of which make themselves known in any way whatever, will be excluded 

 from competition. 



The academy deems it necessary to repeat to competitors that as 

 soon as papers have been submitted for its examination they are placed 

 in its archives, as having become its property. Authors may, at any 

 time, obtain copies, at their own expense, by addressing, to that effect, 

 the permanent secretary. 



Brnssels, session of January 10, 1874. 



For the class of science, 



AD. QUETELET, 



Permanent Secretary. 



SOCIETY OF SCIENCES, HAELEM, HOLLAND. 



PE.OGEAMME FOR THE TEAR 1874. 



The Holland Society of Sciences held its one hundred and twenty- 

 second general meeting May 16, 1874. 



Director Jhr. G. F. van Tets, recently appointed president of the 

 society in place of the late Baron F. W. van Styrum, opened the meet- 

 ing by an address, in which he honored the memory of his predecessor 

 and recalled the.,many services rendered by him to the society in his 

 capacity as director since 1835 and as president since 1867. The 

 deceased also performed in 1838 and 1839 the duties of secretary of the 

 society after the death of the illustrious van Marum. 



In addition to the loss of its president, the society has also had to 

 mourn, in the course of the past year, that of several of its directors 

 and members, namely: J. P. A. van Wickevoort Crommelin, A. F. H. 

 Hoffman, and G. L. J. van der Hucht, directors ; H. C. van Hall, G. 

 C. B. Suringar, and M. Hoek, national members ; L. J. K. Agassiz of 

 Boston, A. A. de la Eive of Geneva, and L. A. J. Quetelet' of Brussels, 

 foreign members. 



The president informed the meeting that Jhr. Q. Hoeufft of Harlem, 

 P. Langerhuizen of Huizen, and D. Visser van Hazerswonde of Amster- 

 dam had just been appointed directors of the society. 



Since the last general meeting, the society has published the following 

 works : 



Archives neerlandaises des sciences exactes et naturelles, numbers 3, 4, 

 and 5 of volume 8, and numbers 1 and 2 of volume 9.^ 



