ON GEOLOGICAL K0MENCLATT7KE. 355 



Ludlow rocks. The only two in the table which he admits to be 

 entirely new, are those which he has introduced for the sub-divisions 

 of the Permian, viz., *' Thuringien " and *' Lodevien : " the German 

 terms "Zechstein" and " Eothliegende " are certainly very 

 awkward. 



The table contains all the synonyms or local names for the groups 

 and divisions used in the different countries ; they will be found in 

 the columns under the heading of the country where they are used* 

 This makes the table a most handy work of reference ; suppose e.g.^ 

 that we wish to know the equivalent of the Werfen beds, we have 

 only to glance down the column of the Alps till we come to them, 

 and looking horizontally across the columns we see this equivalent 

 in the different countries, — thus they correspond to the base of the 

 Muschelkalk and are above the Bunter Sandstone. 



In the Palaeontological column the chief fossils of each group are 

 given, and notes on the appearance and extinction of types of 

 animals are added, e.g. the range of trilobites — the first appearance 

 of Brachyurous Crustaceans, &c., may be here learned. 



In the table here printed I have ventured to make an extraction 

 from Prof. Kenevier's table, taking therefrom the columns containing 

 his terms, as well as Sir C. Lyell's grouping which is added for 

 comparison. In the latter, however, I have made a few alterations, 

 to bring it into accordance with later editions of Lyell's ''Elements.'* 



We may notice that the three great divisions or eras of column 

 Ko. 1 agree with those of English, and I suppose most geological 

 classifications for they are extremely natural : the change in life 

 between the Palaeozoic, Mesozoic, and Cenozoic is most distinctly 

 marked. When we pass to column No. 2 of the rank of *' periods," 

 we find a divergence. 



The first period *' Anthropique " corresponds to the Quaternary 

 of some authors; but Prof. E. rejects this word as this period is by 

 no means equivalent to the Tertiary era, and there is no new flora 

 and fauna ; every one will agree in this, and we may be thankful 

 to him for the term which signifies that the chief fact and interest 

 in the period is the presence of man or his works. We miss the 



