XVI EDITOR'S PREFACE. 



for the type specimens, and all labels upon these were noted and compared 

 with the names upon the plates and with the manuscript notes. By these 

 means it has been possible to ascertain, in nearly every case, the name 

 which Dr. Newberry intended to use. 



Those who have had access to the plates upon which he placed his 

 names have always endeavored to preserve these names by referring, when- 

 ever occasion demanded it, to "Newb. MSS. undistributed plates, U. S. Geol. 

 Surv." This, however, could not be recognized as publication, and in the 

 lapse of time some of the names were used for other species and under the 

 rule of priority could no longer be retained for those of Dr. Newberry. It 

 is also to be noted that names of such species as existed in manuscript only 

 were liable to be superseded by published names of other authors, and under 

 such circumstances Dr. Newberry's names would have to be dropped and 

 the others substituted. One instance in this connection is Sabal occidentalism 

 Newb. MSS., which became 8. imperialis Dn. 



In arranging the text it has been thought desirable to quote Dr. New- 

 berry's original published description in each instance, followed by his sub- 

 sequent manuscript notes, whenever such could be obtained. In case a 

 manuscript description was found for any unpublished species it has been 

 included in full. In the event of no published or manuscript description 

 having been found for any species, such name or memorandum as could be 

 found in connection with the specimen was adopted and a note to that effect 

 included over the editor's initials. In the case of but one figure could abso- 

 lutely no clue be obtained as to its probable reference by Dr. Newberry. 



In regard to the volume entitled Illustrations of Cretaceous and Ter- 

 tiary Plants, etc., Dr. Newberry would never acknowledge any responsi- 

 bility, the names accompanying the plates having been supplied by 

 Lesquereux, at the request of Dr. F. V. Hayden, then director of the United 

 States Geological Survey, without Dr. Newberry's sanction, and it was evi- 

 dently his intention and desire to correct in the present volume several 

 errors which appear in that one. In each instance, therefore, in which the 

 same figure appears in both volumes the fact is noted, with any correction 

 which was found necessary. 



The work is confessedly incomplete in certain respects, due to loss of 

 type specimens and absence or incompleteness of manuscript, and many 

 of Dr. Newberry's reasonings and conclusions would probably not be 



