Carnegie Institution have assumed such importance that it has 

 been deemed advisable to organize a Department of Botanical 

 Research in the Institution. I have been elected Director of the 

 newly established department, and wish to accept the appoint- 

 ment. I must therefore ask that you relieve me of the duties of 

 Assistant Director of the Garden at a date convenient to yourself, 

 not later than January i, 1906. 



I wish to express my appreciation of the action of the Scien- 

 tific Directors by which I have enjoyed unexcelled opportunities 

 for research during the six and a half years of my term of service 

 in the Garden, and also to thank you for the interest shown in 

 my work, and for the considerate manner in which my adminis- 

 trative duties have been adjusted. 



The investigations on heredity and evolution in which I have 

 been engaged for some time have now reached the stage of great- 

 est fruitfulness, and I would esteem it a great favor if I were 

 granted the use of facilities in the Garden for the continuance of 

 this work. I would expect to give the matter personal attention 

 during a few months each year, and to arrange for assistance 

 during the remainder of the time. 



One of the chief functions of the newly organized department 

 will be to cooperate and give assistance in every practicable man- 

 ner in botanical investigations of all kinds, and it is hoped that 

 the resources of the Desert Laboratory, and other facilities of the 

 department may be of service to you in the promotion of your 

 work on the cactuses, and in other work in progress at the 

 Garden. Yours very truly, 



D. T. MacDougal. 



The resignat 

 and the followi 

 by the Scientific Directors and confirmed by the Board 1 



Manager 



New York Botanical Garden, 

 Bronx Park, New York City. 



December 16, 1905. 

 : In the resignation of Dr. Daniel T. MacDougal, 

 rector, the New York Botanical Garden loses the 



