192 



THE JOURNAL OF GEOLOGY. 



formations in which animals or vegetables appear." (Murchison, 

 Silurian System, p. 11). 



Without entering into the delicate question of apportioning 

 the honors due to each of these great English geologists (see 

 American Journal of Science, Vol. xxxix., p. 167, 1890), it maybe 

 said that in this early usage of the terms, the distinction between 

 Protozoic and Palaeozoic was ideal — and in later developments. 

 Palaeozoic has been retained for that lower great division of the 

 scale containing distinct remains of organisms, with the Cambrian 

 system at the bottom. To show the connection with the older 

 nomenclature, it may be noted that Palaeozoic is equivalent to 

 Primary fossiliferous, and in this system Azoic was applied to the 

 Primitive rocks of the Lehmann system. 



John Phillips, in 1841, proposed to extend the method of 

 classification to the whole geological series, and as his scheme 

 was apparently the first complete classification constructed on 

 this basis, it is offered as it appeared in " Palaeozoic fossils of 

 Devon and Cornwall," London, 1841, p. 160 (see also Penny 

 Cyclopaedia, articles Geology, Palaeozoic Rocks, Saliferous sys- 

 tem, etc). 



Proposed titles depending on the 

 series of Organic Affinities. 



r Upper 

 Cainozoic strata < Middle 



( Lower 



Mesozoic strata 



Upper 



Middle 



Lower 



Ordinary title. 



Pliocene Tertiaries. 

 Miocene Tertiaries. 

 Eocene Tertiaries. 



Cretaceous system. 

 Oolitic system. 

 New Red formation. 



Palaeozoic strata 



Upper? 



Middle? 



Lower 



j Magnesian limestone formation 

 ( Carboniferous system. 



Eifel and South Devon. 



Transition strata. 



Primarv srata. 



(The terms are founded on the verb. C^w or ^ww — to live, com- 

 bined with Ktttvos recent, /acsos medial or middle, and TraAatos ancient) . 



