EDITOR'S PREFACE. 
In submitting the accompanying monograph upon the flora of the 
Amboy Clays the editor appreciates fully the delicate nature of his task 
and takes advantage of this opportunity to offer a few words of explanation, 
in order that the credit due to the author may not suffer from any want of 
care on the part of the editor, and also to define the extent of the editor’s 
responsibility. 
The monograph as a whole is the work of Dr. J. 8. Newberry. It 
was almost completed in the autumn of 1890,' but shortly afterwards 
Dr. Newberry became unable, on account of failing health, to put the 
finishing touches upon it, and nothing further was done in the matter until 
the spring of 1892, when it was turned over to me for completion. During 
that interval the manuscript and plates had become disarranged and in 
part lost, and the type specimens had suffered from lack of proper care and 
precaution in storing and handling. It was under such conditions that I 
undertook the responsibility of final revision and preparation for publica- 
tion, and it is hoped that they may serve as sufficient excuse for some of 
the apparent lapses which may be noticed. 
Few alterations have been made in the original text, it having been 
thought better to retain Dr. Newberry’s conclusions, except where these had 
to be modified or omitted in the light of discoveries made or publications 
issued subsequent to the time when he ceased active work. Wherever it 
was found necessary to make additions or alterations the fact is indicated 
over the editor’s initials in the form of a note. Numerous omissions it has 
been found impossible to fill out with the correct data. This is notably the 
case in regard to exact localities for some of the specimens, the records of 
co) 
‘ Fide letter to Prof. Lester F. Ward, September 12, 1890. 
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