302 THE JOURNAL OF GEOLOGY. 



In the interpretation and elaboration of the author's last notes, 

 some of which were fragmentary, and written after the lamented writer 

 was unfit for work, as well as in interpreting and rearranging the 

 extensive additions or modifications to the manuscript, Professor 

 Knowlton, the editor, has shown great discretion, making no altera- 

 tions or enlargements other than those necessary to the expression of 

 the author's intended meaning, or for priority or consistency, such 

 alterations being indicated by brief foot-notes. To him we are also 

 indebted for a valuable tabulation of the geological and geographical 

 distribution of the species, a compilation involving much time and 

 consultation of the literature of the science. 



It is unfortunate that those plates with washed drawings, made 

 under Professor Lesquereux's personal supervision for the lithographer, 

 should have, for financial reasons, been sacrificed, even though the 

 photo - gravure work is of good quality. Much distinctness of the nerv- 

 ation is lost, as may be noted in a comparison with the last plates in 

 the volume, prepared especially for the cheaper process. Although, as 

 in too many of the paleontological publications of the United States 

 Geological Survey, the date on the title page is earlier than the actual 

 publication of the work, the date (1892) on the outside page is, in this 

 instance, correct. David White. 



Cretaceous Fossil Plants from Minnesota. By Leo Lesquereux. Vol. 

 III., Final Report on Geology and Natural History Survey of 

 Minnesota. Feb. 15, 1893, pp. 1-22; pi. A. B. 



The distinguished author of this short paper died in 1889, yet the 

 evidences of his untiring energy are still coming to hand. This paper, 

 bears internal evidence of having been prepared about the time of the 

 completion of his Flora of the Dakota Group, which has likewise only 

 just been published. It is prefaced by a short interesting account of 

 the introduction and development of plant-life, illustrated by a wealth 

 of examples and statistics. 



Cretaceous fossil plants have been known from Minnesota for many 

 years, in fact, several species were obtained by members of the Hayden 

 survey, but this is the first complete systematic review of them. They 

 come mostly from New Ulm, in Redwing Co., and Goodhue township 

 in Goodhue Co. The amount of material examined was very scanty, 

 there having been but fifty-five specimens, yet the richness of the flora 

 is shown by the fact that there are twenty-eight species. Of this num- 



