640 TRAVEL IN EUROPE AND AMERICA. [1873, 



Then, six weeks or more ago, died my next oldest 

 friend and companion, Sullivant, making a sad spring 

 and giving me a needed warning to make haste. He 

 again leaves two unfinished works which I must see 

 to, though Lesquereux will, I trust, edit them. Of 

 one, indeed, he was to be joint author. The other, 

 a second volume of the beautiful " Icones Muscorum," 

 is ready as to the plates, but not at all so, I learn, for 

 the letterpress. 



For myself, as I think I have already told you, this 

 summer completing thirty-one years of professorial 

 work in the university, I am relieved from further 

 duties of instruction, and of my salary. I shall not 

 experience the full relief until the very close of sum- 

 mer. For, in the interest of this department of the 

 university, and to leave it in proper working condi- 

 tion, I have undertaken a course of what we call 

 university lectures, meaning lectures intended the 

 rather for others than members of the university, 

 and have opened the botanical laboratory to pupils, 

 mainly teachers in schools, for the summer. 1 Consid- 

 erable time must be given to them, but, after a few 

 weeks, I hope to throw it mainly upon my assistant, 

 Professor Goodale. 



Professor Goodale, under appointment as assistant 

 professor of vegetable physiology, will take the whole 

 work of instruction in botany off my hands ; but if a 

 former assistant and pupil, Dr. Farlow, now with De 

 Bary, proves capable of it, as I hope, he will, I trust, 

 take up the work in systematic botany. His fancy, 

 however, is for Cryptogamia. 



Mr. Sereno Watson is the only one here to do work 

 in systematic botany, but he will not teach. He and 



1 This was the beginning 1 of summer schools in Harvard University. 



