On the Later Extinct Floras of N. America. 365 



appeared. Among existing genera found in Cretaceous deposits may- 

 be enumerated Populus, Salix, Quercus, Magnolia, and Platanus, 

 together with Diospyros, Aristolochia, Sassafras, Ziriodendron, Tax- 

 odium, Ciipressus, etc., some of which are confined as living plants 

 to the American Continent, though they occur in the Tertiary beds 

 of Europe. With these are associated a few which have disappeared 

 entirely from North America, such as Cinnamomiini, Cissiis, Ficus, 

 Araucaria and Salishuria. 



Professor Newberry adds very greatly to our knowledge of the 

 flora of the Tertiary strata in America. In addition to the genera 

 already named he finds many other forms which exhibit a much 

 nearer approach to the vegetation of the present day. These consist 

 of such genera as Cornus, Negimdo, Carya, Sapindus, Aralia, Ame- 

 lanchier, Planera, Bhus, Sequoia, and Thuja. A considerable affinity 

 may be observed between these genera and the fossils of the Miocene 

 beds of Europe, as well as with the existing flora of Japan and 

 China, though they more closely resemble the living vegetation of 

 North America. 



It is not a little remarkable that some living American genera 

 found in the Cretaceous rocks have not yet been discovered in these 

 Tertiary beds. This may, however, arise from the little that has 

 yet been done in the way of exploring these beds. Professor New- 

 berry has made a valuable beginning. We would venture to suggest 

 the great importance of good drawings of the forms named and 

 described. This is especially desirable when materials so unsatis- 

 factory as leaves generally are, are all the data on which the identi- 

 fication of genera and species can be based. 



IV. — Transactions of the Manchester Geological Society. 

 Part 3. Vol. VIII. Manchester. 8vo. 



UNTIL we received the newspaper report of a recent meeting of 

 this Society, we were at a loss what to make of this part of its 

 Transactions. It seemed to us that by some mistake the sender had 

 put an old number in the cover addressed to us. With no indication 

 of the period of publication on the title page or elsewhere, and 

 having only the dates when the papers were read, " 1842-3," the 

 student consulting this part would of necessity conclude that it was 

 published in 1843. As personal claims to a particular observation 

 or discovery can be established only by publication, it is obvious 

 that such a proceeding as this is reprehensible. We would further 

 be surprised if the diiferent authors of the papers have not a more 

 serious charge against the Council of the Society. The Secretary 

 may have been asleep for a quarter of a century, but geologists have 

 been advancing, and none more so than the authors whose names are 

 prefixed to the essays here published. It would be doing a great 

 injustice to suppose that, with all this progress that has been made 

 in our knowledge of the Glacial Period, Prof. Harkness still adheres 

 to the notions contained in a paper read in January, 1843, or even 

 that he considers those views deservins; to be brou2:ht under the 



