324 BOTANICAL GAZETTE [MAY 
laboration with HEALD in 1897; and a series entitled Notes on North 
American mosses in the BoTANICAL GAZETTE, leading to a revision 
of Dicranum in collaboration with TRUE. 
3. PHystotocy.—The chief contributions of Professor BARNES 
in plant physiology were as a critical reviewer, a teacher and effective 
guide in research, and a-sponsor for certain points of view. He 
was an early champion of the restricted use of the term plant food 
now generally held; advocated many years ago the use of the term 
photosynthesis (or photosyntax), in place of assimilation, for the 
first stages of food-making; and consistently advocated the restriction 
of sex terms to sex organs. The vice-presidential address of 1899, 
and even more the presidential address of rg04, gave stimulating 
points of view much in advance of current usage. To few is given 
the ability to make so clear the actual status when the subject is 
foggy and uncertain, as is the case in so many regions of physiology. 
4. MorpHotocy.—After his removal to Chicago, Professor 
BARNES became greatly interested in the special morphological 
problems presented by the bryophytes, and for a number of years 
offered courses in the subject, in cooperation with Dr. Lanp. In 
connection with this work, Drs. BARNES and Lanp made extensive 
field studies and collections in Mexico in 1906 and 1908. There 
had already appeared two joint papers, one on The origin oj air 
chambers, and the other on The origin oj the cupule of Marchantia. 
Several other joint papers are in various stages of preparation, and 
are to be issued by the junior author. It was planned that this series 
of studies should lead to the preparation of a general work on the 
special morphology of bryophytes. 
The intellectual horizon of Professor BARNES swept in @ much 
larger circle than his professional subject. No man had wider inter- 
ests, or brought to them a saner mind. There was no assurance OF 
dogmatism on the one hand, or no wabbling uncertainty on the other. 
The whole mental attitude was judicial, one of perfect poise, friendly 
to truth from every direction; and the judgment was clean cut, 
but never final. His loss to his department, his university, ‘and his 
science is irreparable, for although institutions and subjects outlive 
their men, a resource that may be replaced in amount, but never in 
kind, has now become a memory. 
