> DIRORLAL | NOTE 
In Number 6, Volume XXVIII (1920), of the Journal of Geology, 
it was announced that, because of the extremely high cost of print- 
ing, it would be necessary to limit Volume XXIX (1921) to six 
numbers. This announcement was made with great regret. It is 
therefore with correspondingly great pleasure that the Journal 
now is able to make the announcement that, through the gener- 
_ osity of one of its associate editors, Dr. R. A. F. Penrose, Jr., for- 
merly connected with the Department of Geology in the University 
of Chicago, the announced reduction in the volume will not be 
necessary. During the year 1921, the Journal will continue to be 
published semi-quarterly, as heretofore. The editors of the Journal 
and the University appreciate deeply the generous support of Dr. 
Penrose. Their feeling will be shared, we believe, by all who are 
interested in the science of geology. 
Certain changes in the editorial policy of the Journal have been 
adopted. ‘These are printed near the bottom of the inside page 
of the first cover of this number, and the attention of contributors 
is called to them. 
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