18 Kansas Academy of Science. 



It is more than ever important that those who continue in their wonted 

 work should realize that they are set apart to see that the great struc- 

 ture of our educational system sustain no detriment so that increased 

 zeal and devotion may compensate for diminished numbers in the 

 maintenance of our institutions and the prosecution of scientific advance. 

 It is well, therefore, that societies such as the Kansas Academy of 

 Science, with long records of achievements in the service of the state, 

 should gather and meet together, to draw inspiration from the past and 

 courage for the work in hand. In the name of the New York Academy 

 of Sciences, I greet you and bid you God-speed. 



TORREY BOTANICAL CLUB. 



Represented by Prof. Raymond J. Pool, Ph. D., University of Ne- 

 braska, Lincoln, 



NATIONAL ACADEMY OF SCIENCES. 



Washington, D. C, March 7, 1918. 

 The Secretat'y, The Kansas Academy of Science, Lawrence, Kan.: 



Dear Sir — The National Academy of Science congratulates the Kan- 

 sas Academy of Science upon arriving at the semicentennial anniversary 

 of its existence and desires to express hope that the results of research 

 work of its members in the future will be even greater than those which 

 have already become a part of the scientific history of Kansas. 



It is regretted that the National Academy of Science is unable to 

 accept the invitation of the Kansas Academy of Science to send a dele- 

 gate, on account of the war conditions and the necessity for so many of 

 its members to be on active duty in connection with war service. 

 Very respectfully yours, 



Arthur L. Day, Home Secretary. 



The academy was represented by Prof. Samuel W. Williston, M. D., 

 Ph. D., Sc. D., Univei'sity of Chicago. 



PHILOSOPHICAL SOCIETY OF WASHINGTON. 



Washington, D. C, March 7, 1918. 

 The Secretary, Kansas Academy of Science, Lawrence, Kan.: 



Dear Sir — The Philosophical Society of Washington has received the 

 notice of the semicentennial anniversary meeting of the Kansas Academy 

 of Science, and the invitation to send a delegate to this meeting. 



The Philosophical Society, through its general committee, wishes to 

 extend congratulations to the Academy and to wish it a long continuation 

 of its useful career. I regret to say, however, that the Society will be 

 unable to send a dalegate. 



Very truly yours, E. C. Crittendon, 



Corresponding Secretary. 



