Eilitorial ('oiiDiwiit. 309 
been found outside of this formation. The others have been 
detected in a number of places, notable in the Denver beds 
of Colorado. The_y are too few in number, however, to base 
very definite conclusions on. 
Only one short paper has ever been prepared on the flora of 
this eo-lignitic group, and while there is much material in 
hand there is at present little that may serve as a basis of 
comparison between it and other localities. Most of the spe- 
cies are peculiar to these beds, but a few have been found in 
the Denver (upper Laramie) beds of Colorado. It is alto- 
gether probable that when this eo-lignitic flora comes to be 
thoroughly worked up it will be found to correspond very 
closely with the Denver beds. Until more systematic work can 
be done it is manifestly impossible to generalize further. 
Very respectfully, 
F. H. Knowlton, Asst. Paleontologist. 
EDITORIAL COMMENT. 
Pkofessok Hkim's Lkttek. 
In answer to the criticism by Prof. Heini of my statement 
of the prize essay incident in the sixth session of the Inter- 
national Geological Congress, I refer for corroboration of every 
detail bvit one as printed in the American Geolo(jist (vol. 
XIV, no. 4) to Prof. Capellini, who I feel sure will confirm my 
notes taken at the time the statements were made. The one 
exception is the amount of the prize, which is not distinctly 
stated in my notes and for wliich I doubtless trusted to my 
memory. 
Prof. Heim is in error in stating tluit in returning the man- 
uscript to Prof. Capellini he has "df)ne' as it" (i. e. the Con- 
gress) "decided.'' The Congress refused to meddle with the 
question. 
T am not familiar with the use of the German language 
which designatf^s the seventy-ninth recurrence of a luital day 
as the eightieth birthday, and if this be the custom in Ger- 
man Switzerland I own that I should have made an error had 
I attemjitc^l to designate such an anriiversary. liut my ig- 
norance, which 1 confess and deplore, has nothing to do with 
the case since I nowliere hazarded an assertion in the sentence 
