guilders per annum, will probably not form an obstacle to 

 anyone . 



The Committee aforesaid intend to present Professor 

 de Vries on his seventieth birthday with an album containing 

 the names of all those who have contributed to the success 

 of the homage and of all the subscribers to the collected 

 essays . 



Professor de Vries will no doubt be pleased to see your 

 name in this book and the Committee will be glad to receive 

 the enclosed form at an early date. 



Prof. Dr. F. A. P. C. WENT, Utrecht, President, 

 Prof. Dr. THEO J. STOMPS, Amsterdam, Secretary. 

 Dr. J. C. COSTERUS, Hilversum, Treasurer. 



Prof. Dr. M. W. BEYERINCK, Delft. 



Dr. A. H. BLAAUW, Haarlem. 



Mrs. Dr. A. WEBER-VAN BOSSE, Eerbeek. 



Dr. P. a. BUEKERS, Velp . 



Dr. H. J. CALKOEN, Haarlem. 



Dr. H. W. HEINSIUS, Amsterdam. 



VAN ITERSON Jr., Delft. 



M. JANSE, Leiden. 



W. MOLL, Groningen. 



PULLE, Utrecht. 

 Dr. A. RANT, Amsterdam. 

 Prof. Dr. J. C. SCHOUTE, Groningen. 

 M. C. E. STAKMAN, Utrecht. 

 Miss Dr. T. TAMMES, Groningen. 

 Prof. Dr. E. VERSCHAPPELT , Amsterdam. 

 Dr. TH. WEEVERS, Amersfoort. 

 Miss Prof. Dr. JOHa WESTERDIJK, Amsterdam. 

 Prof. Dr. C. VAN WISSELINQH, Groningen. 

 Dr. H. H. ZEIJLSTRA Pzn. , Deventer. 



